Science

Heads of state, ministers and UN Secretary General Antonio Guterres arrive in Cali Tuesday hoping to add impetus to grinding talks on ways to save nature from human destruction.

The 16th so-called Conference of Parties (COP16) to the UN's Convention on Biological Diversity (CBD) has the urgent task of coming up with monitoring and funding mechanisms to achieve 23 nature protection goals agreed in Canada two years ago.

The Western European hedgehog -- the prickly, nocturnal critter people love to encounter in the garden -- is in decline, mowed down by cars as its shrinking habitat forces it to move ever closer to humans.

An updated Red List of Threatened Species published Monday at the UN's COP16 biodiversity summit in Cali, Colombia, downgraded the hedgehog's status from "least concern" to "near threatened."

Every rainy season for the past 12 years, floods have swept through 67-year-old Idris Egbunu's house in central Nigeria.

It is always the same story -- the Niger River bursts its banks and the waters claim his home for weeks on end, until he can return and take stock of the damage.

The world's nations must commit to dramatically slashing greenhouse gas emissions in the near future or risk a "catastrophic" rise in global average temperatures, a key United Nations climate report published Thursday warned.

"It is still technically possible to meet the 1.5°C goal" set out in the Paris agreement, "but only with a G20-led massive global mobilization to cut all greenhouse gas emissions, starting today," the United Nations Environmental Program (UNEP) said in a summary of its annual Emissions Gap Report.

A group of 44 climate scientists from 15 different countries warn there is a "serious risk" that soaring global temperatures will trigger the "catastrophic" collapse of a crucial system of ocean currents—and possibly sooner than established estimates considered likely.

The Atlantic Meridional Overturning Circulation, or AMOC, moves warm water up from the tropics to the North Atlantic, where it sinks and cools before returning south. It is, as letter signatory and oceanographer Stefan Rahmstorf toldThe Guardian, "one of our planet's largest heat transport systems." If it collapsed, it could lower temperatures in some parts of Europe by up to 30°C.

The human brain is a marvel of complexity. It contains specialized and interconnected structures controlling our thoughts, personality and behavior.

The size and shape of our brains also play a crucial role in cognitive functions and mental health. For example, a slightly smaller hippocampus, the structure responsible for regulation of memory and emotion, is commonly seen in depression. In dementia, atrophy of the hippocampus is correlated with memory loss and cognitive decline.

A "doomsday vault" in the Arctic designed to safeguard the world's plant diversity has received a new deposit of thousands of seed samples, including Palestinian ones amid war and hunger in Gaza, it said on Wednesday.

Opened in 2008, the Global Seed Vault offers a safety net in case of natural catastrophe, war, climate change, disease or manmade disasters.

Psychologists know that childhood trauma, or the experience of harmful or adverse events, can have lasting repercussions on the health and well-being of people well into adulthood. But while the consequences of early adversity have been well researched in humans, people aren’t the only ones who can experience adversity.

If you have a rescue dog, you probably have witnessed how the abuse or neglect it may have experienced earlier in life now influence its behavior – these pets tend to be more skittish or reactive. Wild animals also experience adversity. Although their negative experiences are easy to dismiss as part of life in the wild, they still have lifelong repercussions – just like traumatic events in people and pets.

Each October, as the days shorten and the air grows crisp, millions of Americans prepare for the beloved – and often sugar-fueled – tradition of Halloween. From jack-o’-lanterns glowing on porches to costumes ranging from the whimsical to the gory, Halloween is a time of playful scares, childhood memories and, of course, candy.

But as the wrappers pile up and the sugar rush hits, there’s something far more sinister brewing beneath the surface: the negative effects of candy on your gut health.

Human-caused climate change worsened floods that have killed hundreds of people and displaced millions in Cameroon, Chad, Niger, Nigeria and Sudan this year, according to a study published on Wednesday.

The intense rainy season has unleashed a humanitarian crisis across large areas of the Sahel region bordering the Sahara desert.

One of the world's rarest whale species has seen a slight population rebound, according to data released Tuesday, though experts warn it remains at serious risk of extinction.

The number of North Atlantic right whales rose to 373 in 2023, up four percent from a recent low of 358 individuals in 2020, according to the latest estimates by scientists at the New England Aquarium and the National Oceanic and Atmospheric Administration (NOAA).

A large communications satellite has broken up in orbit, affecting users in Europe, Central Africa, the Middle East, Asia and Australia, and adding to the growing swarm of space junk clouding our planet’s neighborhood.

The Intelsat 33e satellite provided broadband communication from a point some 35,000km above the Indian Ocean, in a geostationary orbit around the equator.

Artificial intelligence (AI) has taken center stage in basic science. The five winners of the 2024 Nobel Prizes in Chemistry and Physics shared a common thread: AI.

Indeed, many scientists – including the Nobel committees – are celebrating AI as a force for transforming science.