It sounds like something out of Norse mythology, but new evidence suggests that all complex life on Earth, including humans, might have evolved from Asgard – a large group of microbes that were once found all over the world.
66 million years ago, the sudden extinction of the dinosaurs started the ascent of the mammals, ultimately resulting in humankind’s reign on Earth. Climate scientists now reconstructed how tiny droplets of sulfuric acid formed high up in the air after the well-known impact of a large asteroid and blocking the sunlight for several years, had a profound influence on life on Earth.
Megalodon, the largest known shark that ever lived, had a taste for small whales and it went extinct when populations of their favorite prey collapsed as the Pliocene Epoch (5.3–2.58 million years ago) drew to a close, new evidence indicates.
Like spicy food? If so, you might live longer, say researchers at the Larner College of Medicine at the University of Vermont, who found that consumption of hot red chili peppers is associated with a 13 percent reduction in total mortality — primarily in deaths due to heart disease or stroke — in a large prospective study.
Global life expectancy has now reached an average that’s regularly in the 80s in Japan and Canada —and in the United States it’s reached a high of 78 years.
Have we reached the end of the line when it comes to living longer and healthier lives? Is there a point at which diminishing returns just mean any gains in lifespan are bound to be insignificant and temporary?
By examining the brains of 480 people that died between the ages of 16 and 106, researchers have learned that glial cells experience bigger changes than neurons during aging.
This information could lead to better treatment options for neurological disorders, such as dementia and Alzheimer’s, or even ways to combat aging altogether.
The first day of the Brains vs. AI poker tournament is in the books, and the Libratus bot from Carnegie Mellon University emerged as the clear winner, collecting $81,716 to the humans $7,228.
The Pentagon may soon be unleashing a 21st-century version of locusts on its adversaries after officials on Monday said it had successfully tested a swarm of 103 micro-drones.
Every year, the U.S. Army uses hundreds of thousands of rounds of bullets for training purposes. That means plenty of metallic waste—refuse that can take centuries to break down. But one day, that training trash could turn into environmental treasure.
Inside every mouse lurks a natural-born killer. Researchers have identified the brain region that controls hunting, and have found a way to switch it on and off.
A new study reveals that a type of native birdsong, now lost in Britain, can still be heard in New Zealand where the birds were introduced in the 19th century.
By comparing recordings of yellowhammer accents in both countries scientists were able to hear how the birds’ song might have sounded in the UK 150 years ago.
Heavy rains in central Australia have brought to light a mysterious alien looking bug hatching from years of obscurity.
The bug, a remnant of prehistoric time, is a type of crustacean known as a Shield Shrimp, and there is one species in Australia, the Triops australiensis, which is commonly found in the middle of the continent.
Eight smart limbs plus a big brain add up to a weird and wondrous kind of intelligence
Octopus brains and vertebrate brains have no common anatomy but support a variety of similar features, including forms of short- and long-term memory, versions of sleep, and the capacities to recognize individual people and explore objects through play.
Killer whales and humans would seem to have little in common. We inhabit very different ecosystems, after all. Yet the two species share one unexpected biological attribute. Females of Orcinus orca and Homo sapiens both go through the menopause.
Should killer whales Skype? A new study suggests that virtual links between captive orca populations might be one way to improve the lives of these marine mammals.
Related: Dolphins held in captivity escape from Japanese tourist attraction
Japanese scientists find that macaque monkeys, like humans, know the limits of their own memory
Knowing one’s limits can be a strength. Just ask Socrates, whose famous paradox is often summed up in the phrase: “I know one thing: that I know nothing.”
A group of explorers and archaeologists were struck down by an aggressive tropical disease which eats through the face while uncovering the mysteries of a legendary lost city in Honduras.
Alt: Explorers find disease-cursed City of the Monkey God and nearly lose their faces to flesh-eating parasite