Racing Towards Great White Sharks in Australia

This picture taken on November 10, 2025 shows Charlie Kerr from the shark monitoring program retrieving smart drumlines equipped with baited hooks that were deployed at popular coastal locations in waters up to 15 meters (50 feet) deep near Coffs Harbour, New South Wales. (Photo by Saeed KHAN / AFP)
This picture taken on November 10, 2025 shows Charlie Kerr from the shark monitoring program retrieving smart drumlines equipped with baited hooks that were deployed at popular coastal locations in waters up to 15 meters (50 feet) deep near Coffs Harbour, New South Wales. (Photo by Saeed KHAN / AFP)
TT

Racing Towards Great White Sharks in Australia

This picture taken on November 10, 2025 shows Charlie Kerr from the shark monitoring program retrieving smart drumlines equipped with baited hooks that were deployed at popular coastal locations in waters up to 15 meters (50 feet) deep near Coffs Harbour, New South Wales. (Photo by Saeed KHAN / AFP)
This picture taken on November 10, 2025 shows Charlie Kerr from the shark monitoring program retrieving smart drumlines equipped with baited hooks that were deployed at popular coastal locations in waters up to 15 meters (50 feet) deep near Coffs Harbour, New South Wales. (Photo by Saeed KHAN / AFP)

Sensible people might prefer to flee at torpedo speed from a great white shark, but there's one job in Australia that pays you to race towards the predators.

And when you reach the big fish, you have to fix a tracker to its dorsal fin while bobbing in a boat on the ocean swell, AFP reported.

The job is key to a sophisticated protection network that lets swimmers, surfers and fishers check for the aquatic hunters in real time when they venture into the water.

Every day, workers lay 305 satellite-linked buoys at popular spots in waters up to 15 meters (50 feet) deep along the coastline of New South Wales as part of the state-run program.

The so-called smart drumlines have baited hooks and when a shark takes a bite it is caught, sending a signal to the tagging team.

Then comes the hard part.

But it's not the wild "rodeo" people might think, said Paul Butcher, principal research scientist for the state government shark tagging and tracking program for the past 10 years.

"The sharks are really benign. The process has little impact on those sharks," he told AFP.
A boat races to the buoy within 16 minutes of the alert.

If the fish is one of three potentially dangerous species -- a great white, bull shark or tiger shark -- team members get to work.

They wrap two ropes around the animal: one near its tail and another in front of the pectoral fin to support its body.

Once the carnivore has been pulled close to the side of the boat, it is rolled to one side carefully while ensuring seawater is passing through its gills.

The position places the shark naturally into a trance-like state that minimizes the risk of harm to the team and the animal.

Workers measure the shark's length, collect tissue samples, and fit an acoustic tag to its dorsal fin.

Finally, the animal is released at least one kilometer (half a mile) offshore, vanishing into the blue with a flick of its tail.

The whole process takes about 15 minutes.

"You get some animals that have their own personalities," Butcher said.

"Great whites, when we catch them, they're easy to work on next to the boat. Tiger sharks, not so much. And bull sharks are really benign as well."

In the past 10 years, the state's program -- managed by the Department of Primary Industries -- has tagged 1,547 white sharks, 756 tiger sharks and 240 bull sharks.

Tagged sharks are detected when they swim past one of 37 listening stations dotted along the coastline.

That sets off an alarm on the SharkSmart app, giving beachgoers an instant notification on their mobiles and smart watches.

The technology forms part of a multi-layered approach that authorities have adopted, alongside spotter drones and old-fashioned nets.

More than 1,280 shark incidents have been recorded around Australia since 1791 -- about 260 of them fatal -- according to a national database.

Though still relatively rare, fatal attacks are on the rise with 57 reported deaths in the 25 years to 2025, compared to 27 in the previous quarter-century.

In November, a three-meter (10-foot) bull shark fatally bit one woman and injured her boyfriend off a remote beach north of Sydney.

The Swiss tourists were reportedly filming a pod of dolphins.

Despite overfishing depleting some shark species, scientists say the rise in fatalities may be linked to the growing numbers of people taking to the water.

Rising ocean temperatures also appear to be swaying sharks' migratory patterns.
Researchers say shark lives, too, need protecting.

Globally, about 37 percent of oceanic shark and ray species are now listed as either endangered or critically endangered by the International Union for Conservation of Nature, a database for threatened species.



Australian Firefighters Warn of ‘High-Risk’ Bushfire Season

Country Fire Authority (CFA) crew fill up tankers in the bushfire affected town of Ruffy, Victoria, Australia, 12 January 2026. (EPA)
Country Fire Authority (CFA) crew fill up tankers in the bushfire affected town of Ruffy, Victoria, Australia, 12 January 2026. (EPA)
TT

Australian Firefighters Warn of ‘High-Risk’ Bushfire Season

Country Fire Authority (CFA) crew fill up tankers in the bushfire affected town of Ruffy, Victoria, Australia, 12 January 2026. (EPA)
Country Fire Authority (CFA) crew fill up tankers in the bushfire affected town of Ruffy, Victoria, Australia, 12 January 2026. (EPA)

Australian firefighters warned people on Monday to prepare for more bushfires in a "high-risk" summer, after blazes killed one person and incinerated more than 350 buildings in the southeast.

Weather conditions have eased since strong winds and temperatures topping 40C fed dozens of wildfires in southeastern Australia's Victoria, which declared a state of disaster on Saturday.

But officials said 12 major fires were still burning across the state.

Country Fire Authority chief officer Jason Heffernan said another "heating event" was expected towards the end of January, though its intensity was uncertain.

"We are early in the high-risk weather season," Heffernan told a news conference.

"There's been a lot of fire in the landscape. Much work will be done between now and then to contain these fires," he said.

"Whilst we join with community in the rebuilding and the relief and recovery of the fires that have been, we need to turn our minds to the fires that could be as the season continues."

More than 350 structures -- including over 65 homes -- have been lost so far in the state, officials said, with the number likely to rise as fire damage is assessed.

One person died in a fire near the town of Longwood, about two hours' drive north of state capital Melbourne, police say.

Emergency Management Commissioner Tim Wiebusch said weather conditions had become more favorable for firefighters.

"But that doesn't mean that the risk is over," he said.

"Whilst the conditions are easing in some parts of the state, even the slightest of winds are still causing those fires to move around."

High temperatures and dry winds combined last week to form some of the most dangerous bushfire conditions since the "Black Summer" blazes.

The Black Summer bushfires raged across Australia's eastern seaboard from late 2019 to early 2020, razing millions of hectares, destroying thousands of homes and blanketing cities in noxious smoke.

Australia's climate has warmed by an average of 1.51C since 1910, researchers have found, fueling increasingly frequent extreme weather patterns over both land and sea.


Some Supplements Can Make Your Medication Less Effective

Some vitamin and mineral supplements can interfere with absorption of medications (Oklahoma State University) 
Some vitamin and mineral supplements can interfere with absorption of medications (Oklahoma State University) 
TT

Some Supplements Can Make Your Medication Less Effective

Some vitamin and mineral supplements can interfere with absorption of medications (Oklahoma State University) 
Some vitamin and mineral supplements can interfere with absorption of medications (Oklahoma State University) 

Health experts warned that some supplements can interact with certain medications and reduce their effectiveness, according to Eating Well website.

While these supplements are usually sold over-the-counter, taking them without asking a health care provider can have dangerous impact on your health.

Naturopathic doctor Jacob Wolf said that for instance, some vitamin and mineral supplements can interfere with absorption of medications.

Other supplements can bind with medications, preventing the drug from being utilized in the body, or they may be metabolized by the same or similar pathways as medications, explains Wolf. That can have a dangerous impact on your health.

Top offenders include calcium, magnesium, iron, fiber, activated charcoal and vitamins C and K.

Minerals like calcium, magnesium and iron can bind with medications, especially levothyroxine, a drug used to treat hypothyroidism, said Wolf.

“This can impact how levothyroxine is utilized in the body, adversely affecting treatment,” he explained.

These minerals can also interact with antibiotics in the tetracycline and fluoroquinolone class, said pharmacist Amanda Corbett.

Taking these mineral supplements at the same time as antibiotics may reduce the bioavailability of the antibiotic, creating risks like bacterial resistance or ineffective treatment.

And while scientists affirm fiber is an important nutrient for digestive regularity, healthy cholesterol levels and blood sugar management, supplementing isn’t always a great idea, as large doses can impact the absorption of certain medications.

Fiber-rich foods are a cornerstone of blood sugar management, even for those taking blood sugar–lowering medications, like metformin.

Fiber may also impair the effectiveness of other drugs, including digoxin (which treats certain heart conditions) and levothyroxine for hypothyroidism, Wolf said.

Therefore, if you do choose to take a fiber supplement, Wolf recommended speaking with your health care provider about spacing out your fiber and medication doses.

As for activated charcoal, it is a form of carbon that is used in the emergency room to treat the ingestion of toxic drugs and poisons.

“Activated charcoal acts like a sponge and can bind to many medications. It is best to completely avoid activated charcoal if on any life-critical medication,” said Wolf.

For Vitamin C, it is an important antioxidant that protects cells from free radical damage and supports proper immune system function.

However, if you are undergoing chemotherapy treatment for cancer, experts strongly caution against taking vitamin C supplements.

“Vitamin C can lead to certain chemotherapies being less effective or ineffective in treating cancer,” said Corbett.

Vitamin E, another antioxidant, can also interfere with chemotherapy’s effectiveness.

If taking Vitamin K, which is a fat-soluble vitamin that helps blood clot and shores up bone health, you should know that it can reduce the effectiveness of a blood-thinning medication called warfarin (Coumadin).

That, in turn, can make blood more likely to clot, which can lead to a heart attack or stroke.

If you are taking warfarin, you don’t necessarily need to avoid vitamin K, but it is critical to keep the amount you consume—from both foods and supplements—consistent to avoid clotting problems.

Experts advise that to take supplements safely, consult with your health care provider.

Many supplements can interact with medications, and so it’s critical to connect with your prescribing health care provider to make sure that the supplements you’re taking play nice with your medications.

Also, look for those that have been independently tested in a laboratory, recommended Corbett.

Experts say you should also know how much to take. Supplement dosages are listed on the label, but they aren’t standardized.

That means they can vary from product to product, and may far exceed safe levels.

 

 

 


Rejuvenated Human Eggs… Scientists Revolutionize IVF Success

Egg quality is the primary cause of IVF failure and miscarriage in older women (Reuters) 
Egg quality is the primary cause of IVF failure and miscarriage in older women (Reuters) 
TT

Rejuvenated Human Eggs… Scientists Revolutionize IVF Success

Egg quality is the primary cause of IVF failure and miscarriage in older women (Reuters) 
Egg quality is the primary cause of IVF failure and miscarriage in older women (Reuters) 

German scientists claim to have “rejuvenated” human eggs for the first time in an advance that they predict could revolutionize IVF success rates for older women.

The groundbreaking research suggests that an age-related defect that causes genetic errors in embryos could be reversed by supplementing eggs with a crucial protein, according to The Guardian.

When eggs donated by fertility patients were given microinjections of the protein, they were almost half as likely to show the defect compared with untreated eggs.

If confirmed in more extensive trials, the approach has the potential to improve egg quality, which is the primary cause of IVF failure and miscarriage in older women.

The decline in egg quality is the main reason IVF success rates drop steeply with female age and is why the risk of chromosome disorders such as Down’s syndrome increases with maternal age.

“Overall we can nearly halve the number of eggs with [abnormal] chromosomes. That’s a very prominent improvement,” said Prof Melina Schuh, a director at the Max Planck Institute for Multidisciplinary Sciences in Göttingen and a co-founder of Ovo Labs, which is aiming to commercialize the technique.

“Most women in their early 40s do have eggs, but nearly all of the eggs have incorrect chromosome numbers,” added Schuh, whose lab has been investigating egg biology for the past two decades. “This was the motivation for wanting to address this problem.”

The latest approach targets a vulnerability in eggs linked to a process called meiosis, in which sex cells (eggs or sperm) jettison half their genetic material so they can join together to make an embryo.

In eggs, this requires 23 pairs of X-shaped chromosomes to align along a single axis in the cell. On fertilization, the cell divides causing the chromosome pairs to be – ideally – neatly snapped down their centers to create a cell with precisely 23 single chromosomes from the mother, the rest being delivered by the sperm.

However, in older eggs the chromosome pairs tend to loosen at their midpoint, becoming slightly unstuck or detaching entirely before fertilization.

In this scenario, the X-shaped structures fail to line up properly and move around chaotically in the cell, so when the cell divides they are not snapped symmetrically.

This results in an embryo with too many or too few chromosomes.

Schuh and colleagues previously found that a protein, Shugoshin 1, which appears to act as a glue for the chromosome pairs, declines with age. In the latest experiments in mouse and human eggs, they found that microinjections of Shugoshin 1 appeared to reverse the problem of chromosome pairs separating prematurely.

Using eggs donated by patients at the Bourn Hall fertility clinic in Cambridge, they found that the number showing the defect decreased from 53% in control eggs to 29% in treated eggs. When they looked only at eggs from women over 35 years of age, a similar trend was seen (65% compared with 44%), although this result was not statistically significant, which the scientists said was probably due to them only having treated nine eggs in this age range.

Dr Agata Zielinska, a co-founder and co-CEO of Ovo Labs, said: “Currently, when it comes to female factor infertility, the only solution that’s available to most patients is trying IVF multiple times so that, cumulatively, your likelihood of success increases. What we envision is that many more women would be able to conceive within a single IVF cycle.”

The findings will be presented at the British Fertility Conference in Edinburgh on Friday and have been published as a preprint paper on the Biorxiv website.