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Reconstruction of Dinosaur Brain Sheds Light on Diet, Fast Activity

The skull of a tyrannosaur nicknamed the "Bisti Beast" is on display at the New Mexico Museum of Natural History and Science in Albuquerque, N.M., Aug. 15, 2017. AP.
The skull of a tyrannosaur nicknamed the "Bisti Beast" is on display at the New Mexico Museum of Natural History and Science in Albuquerque, N.M., Aug. 15, 2017. AP.
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Reconstruction of Dinosaur Brain Sheds Light on Diet, Fast Activity

The skull of a tyrannosaur nicknamed the "Bisti Beast" is on display at the New Mexico Museum of Natural History and Science in Albuquerque, N.M., Aug. 15, 2017. AP.
The skull of a tyrannosaur nicknamed the "Bisti Beast" is on display at the New Mexico Museum of Natural History and Science in Albuquerque, N.M., Aug. 15, 2017. AP.

A pioneering reconstruction of the brain belonging to one of the earliest dinosaurs to roam the Earth has shed new light on its possible diet and ability to move fast.

Research, led by the University of Bristol and published in the Zoological Journal of the Linnean Society, used advanced imaging and 3-D modeling techniques to digitally rebuild the brain of Thecodontosaurus.

The paleontologists found Thecodontosaurus may have eaten meat, unlike its giant long-necked later relatives including Diplodocus and Brontosaurus, which only fed on plants.

Thecodontosaurus lived in the late Triassic age some 205 million years ago and was the size of a large dog. Although its fossils were discovered in the 1800s, many of which are carefully preserved at the University of Bristol, scientists have only very recently been able to use CT scans to generate 3-D models that helped identify anatomical details about its brain and inner ear previously unseen in the fossil.

Even though the actual brain is long gone, the software allows paleontologists to recreate brain and inner ear shape via the dimensions of the cavities left behind. The researchers compared the reconstructed brain to other dinosaurs, identifying common features and some that are specific to Thecodontosaurus.

"Its brain cast showed the detail of the floccular lobes, located at the back of the brain, which are important for balance. Their large size indicates it was bipedal. This structure is also associated with the control of balance and eye and neck movements, suggesting Thecodontosaurus was relatively agile and could keep a stable gaze while moving fast," explained Antonio Ballell, lead author of the study in a report published on the Bristol University's website.

"Parts of the brain associated with keeping the head stable and eyes and gaze steady during movement were well-developed. This could also mean Thecodontosaurus could occasionally catch prey," he added.

The researchers were also able to reconstruct the inner ears, allowing them to estimate how well it could hear compared to other dinosaurs. Its hearing frequency was relatively high, pointing towards some sort of social complexity -- an ability to recognize varied squeaks and honks from different animals.

Professor Mike Benton, study co-author, said: "It's great to see how new technologies are allowing us to find out even more about how this little dinosaur lived more than 200 million years ago."

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'Secret Highway' to Mars Could Cut Journey Time to 153 Days

Chance may lead us to the shortest paths in space as well. (Shutterstock)
Chance may lead us to the shortest paths in space as well. (Shutterstock)
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'Secret Highway' to Mars Could Cut Journey Time to 153 Days

Chance may lead us to the shortest paths in space as well. (Shutterstock)
Chance may lead us to the shortest paths in space as well. (Shutterstock)

Astronomers have identified a new space corridor that could cut hundreds of days from the journey to Mars by taking advantage of a natural route followed by some asteroids as they travel between planets.

The distance between Earth and Mars constantly changes depending on their positions and orbital speeds around the Sun. It reaches its shortest point when Earth lies directly between the Sun and the Red Planet, a phenomenon known as “Mars opposition,” which occurs roughly every 26 months.

Even so, reaching Mars currently takes between seven and 10 months, even using the fastest spacecraft available. But the newly identified space corridor, which opens during periods when the two planets are relatively close, could reduce the total mission time to just 153 days.

Space agencies typically plan planetary missions by analyzing planetary orbital data to determine optimal flight paths and fuel requirements. However, this newly identified corridor was discovered through the study of asteroid orbital data instead.

Astronomers explored whether asteroid trajectories could reveal hidden shortcuts through space, focusing on asteroid 2001 CA21, which is believed to cross the orbital paths of both Earth and Mars.

Researchers analyzed the asteroid’s close approaches to Mars, a trajectory that could allow spacecraft to follow a more direct route to the Red Planet. They also examined Mars opposition windows in 2027, 2029, and 2031 to determine which offered the best conditions for a shorter journey.

The study found that 2031 is the only year in which the geometry of Earth and Mars aligns favorably with the asteroid’s orbital plane, making the rapid route possible.

The researchers said in the study, published in Acta Astronautica and cited by The Independent: “The 2031 Mars opposition supports two complete round-trip missions in less than one year while aligning with the orbital plane associated with asteroid CA21, demonstrating how small-body orbital data can help identify rapid interplanetary transfer opportunities at an early stage.”

They added: “This study presents an innovative engineering methodology for designing rapid interplanetary missions.”

The research team hopes future studies into the orbital dynamics of near-Earth asteroids will contribute to developing faster and more efficient designs for interplanetary space travel.

Varieties

Study Shows How Potato-based Diet Changed Genetics of Andean People

FILE PHOTO: A woman sells potatoes at La Parada market in La Victoria district of Lima, Peru, June 14, 2017. REUTERS/Mariana Bazo/File Photo
FILE PHOTO: A woman sells potatoes at La Parada market in La Victoria district of Lima, Peru, June 14, 2017. REUTERS/Mariana Bazo/File Photo
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Study Shows How Potato-based Diet Changed Genetics of Andean People

FILE PHOTO: A woman sells potatoes at La Parada market in La Victoria district of Lima, Peru, June 14, 2017. REUTERS/Mariana Bazo/File Photo
FILE PHOTO: A woman sells potatoes at La Parada market in La Victoria district of Lima, Peru, June 14, 2017. REUTERS/Mariana Bazo/File Photo

Indigenous people in the Andes domesticated the potato - a great source of starch, vitamins, minerals and fiber - 6,000 to 10,000 years ago, making this tuber a central part of their diet.

These people then experienced genetic adaptations beneficial for such a diet that are still seen in their descendants living in Peru.

New genomic research documents how these descendants - speakers of the Quechua language of the once-great Inca Empire - underwent fortification involving a gene called AMY1 that is involved in starch digestion, a function useful for people with a potato-centric diet.

The study found that these people possess an average of 10 copies of AMY1 - two to four more than most people. No other known population globally exceeds that number. According to Reuters, the study also showed that the onset of these genetic changes in this population coincided with the advent of potato domestication.

"It is a wonderful case of culture shaping biology," said evolutionary and anthropological geneticist Omer Gokcumen of the University at Buffalo, one of the senior ⁠authors of the ⁠research published this week in the journal Nature Communications.

"This highlights the importance of dietary adaptation in human evolutionary history, with implications for metabolism, health and the impact of domestication events on human biology," said UCLA anthropological geneticist Abigail Bigham, also one of the study's senior authors.

At the molecular level, AMY1 governs an enzyme called amylase that is present in saliva and is responsible for breaking down starch in the mouth when a person eats starchy foods. A person with more copies of the gene may produce more of the enzyme.

This greater dosage, the researchers said, may facilitate better metabolism of ⁠high-starch diets. Amylase may also be involved in regulating the microbiome - the body's natural collection of microbes - which can shift with dietary change.

Lactose tolerance is another example of diet-driven evolutionary adaptation, involving a gene related to an enzyme that breaks down lactose in milk.

In the new study, the researchers analyzed genomic data spanning more than 3,700 people across 85 populations in the Americas, Europe, Africa and Asia, including 81 native Quechua speakers of Andean ancestry in Peru.

The researchers said it appears that over time evolutionary forces favored extra copies of AMY1 in the ancient Andeans.

In order to become widespread, a genetic variant may provide some advantage.

"Therefore, one hypothesis is that people with more copies of AMY1 may have been better able to process starch-rich foods, including potatoes," University at Buffalo doctoral student and study co-lead author Luane Landau said.

"Individuals who were born with the higher copies of AMY1 may have had an ⁠advantage as compared to ⁠individuals who did not have it, and left more descendants over generations.

Over time, this could explain why the genetic version linked to high AMY1 copy number became more common in Andean populations today," Landau said.

Potatoes represented a reliable food source - a crop that thrived at the high altitudes these people inhabited.

"They were one of the main sources for calories in the ancient Andean diet," University at Buffalo doctoral student and study co-lead author Kendra Scheer said.

Potatoes were at the heart of the Inca food supply. They were brought to Europe and the rest of the world following the Spanish conquest of the Inca Empire in the 16th century.

"Their global culinary spread is a testament to their broad likeability," Bigham said.

At markets in the Andean highlands and elsewhere in Peru, Quechua speakers sell a wide variety of potatoes, with flesh of various colors including purple, blue, red, gold, white and even black.

"In Peru, there are about 3,000 to 4,000 different kinds of potato, but the majority of the world has access to only a select few strains. Therefore, there is a whole world of different types of French fries that are possible," Scheer said.

Varieties

Court Rules in ‘Sunbed War,’ Towels Lose

A pool with sunbeds at a luxury resort (Shutterstock)
A pool with sunbeds at a luxury resort (Shutterstock)
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Court Rules in ‘Sunbed War,’ Towels Lose

A pool with sunbeds at a luxury resort (Shutterstock)
A pool with sunbeds at a luxury resort (Shutterstock)

A German tourist has won a payout of more than €900 (£850) after he was unable to secure a sun lounger due to other guests reserving them with towels, according to BBC.

The man, who has not been identified, was on holiday in Greece with his family in 2024, and said he spent 20 minutes a day trying to find a sun lounger, despite waking up at 06:00.

He then sued his tour operator for allowing the reservation system, arguing the sunbeds were reserved so often, they were unusable.

Judges at a district court in Hanover ruled in his favor, and said the family of four were entitled to a larger refund on their package holiday as it had been “defective.”

The man had initially paid €7,186 (£6,211) to take his wife and their two children on the package holiday to Kos, an island in Greece.

In his arguments to court, he said that his tour operator had failed to enforce the resort's ban on towel reserving, and did not confront guests who were engaging in the practice.

He added that even when his family rose at 06:00, loungers were unavailable, and his children were forced to lie on the floor.

Though the tour operator had initially paid out a refund of €350 (£302), judges in Hanover ruled the family was entitled to a refund of €986.70 (£852.89).

They said that although the travel company did not run the hotel and could not ensure every customer could access a sunbed at any given time, the operator did have an obligation to make sure there was an organizational structure that would guarantee a “reasonable” ratio of sunbeds to guests.

Many tourists will have encountered “sunbed wars” or “dawn dash” on holiday, which is the practice of reserving loungers with towels.