Scientists believe the Earth has already gone through five mass extinction events, and many fear that we are already in the midst of a sixth. Hundreds of species of organisms have disappeared in the ...

From 'Moonlight' to 'Parasite,' documentaries to superhero epics — our picks for the greatest movies of the past 25 years ...

Jessica Wright, USDA Forest Service, Pacific Southwest Research Station ...

The Cabbage White butterfly is an invasive species that first appeared in North America in the mid-19th century. Dellinger said one factor that’s causing the decline in populations is habitat loss.

The early 21st century was defined by the terrorist attacks of September 11, 2001. Photographer Robert Clark captured the moment a second plane crashed into the World Trade Center in New York City.

The delicate mouse – widespread across Australia – has turned out to be three different species. ... the first of their kind this century Published: February 22, 2024 2:20pm EST.

In the 21st century, we are all migrants. Humans are in motion across time as well as geography. ... Our species, Homo sapiens, did not evolve in Lahore, where I am writing these words.

It's the greatest threat of our species in the 21st century. It's something we have to figure out. Listen to the full conversation by downloading the IDEAS podcast from your favourite app.

In 2015, scientists discovered Homo naledi, a new species of early human, deep within the Rising Star Cave system in South Africa. This discovery came as a surprise to the world because Homo ...

The idea that male mammals tend to be larger than females has been scientific dogma since Darwin. Bigger bodies, the thinking goes, are better in the battle to win the attention of choosy females.