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Lava Blocks the Size of Buildings Falling from La Palma Volcano

The Cumbre Vieja volcano continues to erupt on the Canary Island of La Palma, as seen from Tajuya, Spain, October 10, 2021. (Reuters)
The Cumbre Vieja volcano continues to erupt on the Canary Island of La Palma, as seen from Tajuya, Spain, October 10, 2021. (Reuters)
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Lava Blocks the Size of Buildings Falling from La Palma Volcano

The Cumbre Vieja volcano continues to erupt on the Canary Island of La Palma, as seen from Tajuya, Spain, October 10, 2021. (Reuters)
The Cumbre Vieja volcano continues to erupt on the Canary Island of La Palma, as seen from Tajuya, Spain, October 10, 2021. (Reuters)

Blocks of molten lava as large as three-storey buildings rolled down a hillside on the Spanish island of La Palma while a series of tremors shook the ground on Sunday three weeks after the volcanic eruption.

There were 21 seismic movements on Sunday, with the largest measuring 3.8, the Spanish National Geological Institute (ING) said, shaking the ground in the villages of Mazo, Fuencaliente and El Paso.

The blocks of red-hot magma flowed down the side of the Cumbre Vieja volcano were the size of three-storey buildings, the Spanish Institute of Geology and Mining said on Sunday.

The lava flow, with temperatures of up to 1,240 degrees Celsius (2,264 degrees Fahrenheit), destroyed the last few buildings that remained standing in the village of Todoque, the Canary Islands Volcanology Institute said on Twitter.

There was a partial cone collapse near the volcano's emission vent on Saturday, Stavros Meletlidis, a spokesman for ING told Reuters.

"The collapse of the northern flank of the Cumbre Vieja volcano has caused the release of large blocks of material and the appearance of new flows that run through areas already evacuated," tweeted Spain's National Security Department.

"The lava has reached the Camino de la Gata industrial estate and new buildings."

Rivers of lava have destroyed 1,186 buildings since the eruption on Sept. 19, the Canary Islands Volcanic Institute said.

Lava has engulfed 493 hectares (1,218 acres) of land, said Miguel Ángel Morcuende, technical director of the Canary Islands Volcanic Emergency Plan (Pevolca) organization.

About 6,000 people have been evacuated from their homes on La Palma, which has about 83,000 inhabitants.

Lightning was seen near the eruption early on Saturday. A study published in 2016 by the journal Geophysical Research Letters found lightning can be produced during volcanic eruptions because the collision of ash particles creates an electrical charge.

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‘More and Faster’: UN Calls to Shrink Buildings’ Carbon Footprint

Snow capped mountains are seen behind the downtown Los Angeles skyline, California, US, March 7, 2025. (Reuters)
Snow capped mountains are seen behind the downtown Los Angeles skyline, California, US, March 7, 2025. (Reuters)
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‘More and Faster’: UN Calls to Shrink Buildings’ Carbon Footprint

Snow capped mountains are seen behind the downtown Los Angeles skyline, California, US, March 7, 2025. (Reuters)
Snow capped mountains are seen behind the downtown Los Angeles skyline, California, US, March 7, 2025. (Reuters)

Countries must move rapidly to slash CO2 emissions from homes, offices, shops and other buildings -- a sector that accounts for a third of global greenhouse gas pollution, the United Nations said Monday.

Carbon dioxide emissions from the building sector rose around five percent in the last decade when they should have fallen 28 percent, according to a new report by the United Nations Environment Program (UNEP).

It said emissions had plateaued since 2023 as climate policies began to have an impact, particularly green building standards, the use of renewable energy and electrified heating and cooling.

But the building sector still consumes 32 percent of the world's energy and contributes 34 percent of CO2 emissions, the report found.

"The buildings where we work, shop and live account for a third of global emissions and a third of global waste," said Inger Andersen, Executive Director of UNEP.

"The good news is that government actions are working. But we must do more and do it faster."

She called on nations to include targets to "rapidly cut emissions from buildings and construction" in their climate plans.

The report said that while most of the countries that signed up to the 2015 Paris climate deal -- nearly 200 have signed -- mention the sector, so far only 19 countries have sufficiently detailed goals in their national carbon cutting plans.

The report said that as of 2023, important metrics like energy-related emissions and the adoption of renewable energy "remain well below required progress rates".

That means that countries, businesses and homeowners now need to dramatically pick up the pace to meet the 2030 emissions reduction targets.

- 'Critical challenge' -

Direct and indirect CO2 emissions will now need to fall more than 10 percent per year, more than double the originally envisaged pace.

The rollout of renewables is a similar story.

The share of renewables like solar and wind in final energy consumption rose by only 4.5 percentage points since 2015, well behind the goal of nearly 18 percentage points.

That now needs to accelerate by a factor of seven to meet this decade's goal of tripling renewable energy use worldwide, UNEP said.

The report urged countries to accelerate the roll-out of renewable technologies and increase the share of renewables in the final energy mix to 46 percent by 2030 -- a rise of around 18 percent.

It also called on policymakers to increase energy efficiency retrofits to include better design, insulation and the use of renewables and heat pumps.

More work also needs to be done to improve the sustainability of materials like steel and cement, whose manufacture accounts for nearly a fifth of all emissions from the building sector.

But the report did say that circular construction practices were increasing in some areas, with recycled materials accounting for 18 percent of construction inputs in Europe.

The authors urged all major greenhouse gas emitters to take action by introducing zero-carbon building energy codes by 2028, and called on other countries to create and tighten their regulations within the next 10 years.

The report highlighted positive national policies from China, France, Germany, Mexico and South Africa among others.

But it said financing remained a "critical challenge".

In 2023, it found that global investment in energy efficiency in buildings fell seven percent from a year earlier to $270 billion, driven by higher borrowing costs and the winding back of government support programs, notably in Europe.

Those investments now need to double -- to $522 billion -- by 2030, it said.