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EXPLAINED: 48 - The Real Truth

Why do some cat siblings look so different?

Normally, siblings resemble each other. So why does a litter of kittens often come in a variety of colors?

LiveScience

Science history: Iconic 'Lucy' fossil discovered, transforming our understanding of human evolution — Nov. 24, 1974

On an expedition in the Awash Valley in Ethiopia, two anthropologists uncovered the bones of a 3.2 million-year-old human ancestor. The iconic "Lucy" fossil would reveal much about our species' tangled family tree.

LiveScience

Why do vultures circle?

Circling vultures aren't waiting for you to die, and seeing them should be a welcome sight because of the benefits they bring, experts say.

LiveScience

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Odd-looking rock on Mars is totally alien to the Red Planet, Perseverance rover finds

NASA's Perseverance Mars rover recently came across an odd rock, dubbed "Phippsaksla," that is unlike anything else the robot has found on the Red Planet. It turns out that it probably isn't from our neighboring world and likely crashed on Mars instead.

LiveScience

Giant 'diamond ring' sparkles 4,500 light-years away in the Cygnus constellation — Space photo of the week

NASA's SOFIA observatory captured a rare image of a glowing gas ring in Cygnus X — a vast star-forming region 4,500 light-years away.

LiveScience

Did Neanderthals have religious beliefs?

Whether Neanderthals had religious beliefs is a subject of ongoing debate.

LiveScience

Dream of quantum internet inches closer after breakthrough helps beam information over fiber-optic networks

Built from a single erbium atom, a hybrid quantum bit encodes data magnetically and beams it through fiber-optic wavelengths.

LiveScience

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Are free radicals really that bad for you?

Free radicals are highly reactive molecules that are missing an electron. They get a bad rap, but could they actually have any benefits?

LiveScience

Scientists find rare tusked whale alive at sea for the first time — and shoot it with a crossbow

Researchers have identified ginkgo-toothed beaked whales alive at sea for the first time after years of searching, and in doing so solved the mystery of an odd echolocation pulse in the North Pacific.

LiveScience

A looming 'insect apocalypse' could endanger global food supplies. Can we stop it before it's too late?

Insect populations are in steep decline, which could endanger the food supply. But there are things we can do to reverse the trend.

LiveScience

Switching off AI's ability to lie makes it more likely to claim it's conscious, eerie study finds

Leading AI models from OpenAI, Meta, Anthropic and Google described subjective, self-aware experiences when settings tied to deception and roleplay were turned down.

LiveScience

Mysterious galaxy trapped in 'the void' keeps churning out stars without fuel. Scientists are stumped.

Researchers are puzzled as to how the dwarf galaxy NGC 6789 continues to make new stars, despite being stuck in the gas-famished Local Void.

LiveScience

See a rare conjunction of Mercury and Venus late tonight

The inner planets Mercury and Venus will both be visible in the east-southeast sky before sunrise on Tuesday, Nov. 25.

LiveScience

Scientists discover new type of lion roar

Researchers used artificial intelligence to analyze more than 3,000 recordings of African lions and found that the animals have an "intermediate" roar as well as a "full-throated" roar.

LiveScience

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Slaying 'zombie cells' in blood vessels could be key to treating diabetes, early study finds

Clearing aged cells from blood vessels could help reduce inflammation, improve blood sugar levels and counter insulin resistance, a mouse study finds.

LiveScience

Archaeologists discover decapitated head the Romans used as a warning to the Celts

A lone skull discovered near the walls of an ancient fort highlights the Romans' brutal treatment of their conquered foes.

LiveScience

'I don't know if CDC will survive, to be quite frank': Former CDC officials describe the disintegration of the agency under RFK

Three former CDC officials share their experiences at the agency leading up to their resignations.

LiveScience

Comet 3I/ATLAS gallery: See NASA's long-awaited images of interstellar visitor

NASA's treasure trove of new comet 3I/ATLAS images provides hotly anticipated views of the interstellar visitor, including from Mars and the sun.

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Scientists put moss on the outside of the International Space Station for 9 months — then kept it growing back on Earth

A species of moss survived for 9 months on the outside of the International Space Station, new research reveals — and 80% of the samples kept reproducing when returned to Earth.

LiveScience

Viking Age woman found buried with scallop shells on her mouth, and archaeologists are mystified

A ninth-century grave discovered in Norway held the remains of a Viking Age woman whose mouth was covered with two large scallop shells.

LiveScience

'3I/ATLAS is a comet': NASA finally releases new 3I/ATLAS images and addresses alien rumors

NASA's highly anticipated comet 3I/ATLAS images have been released, with a space agency official shooting down alien rumors and stressing that the interstellar visitor is a comet.

LiveScience

'A forest with bonobos has never been so quiet': Most extreme case of violence in 'hippie' species recorded, with females ganging up on male in unprecedented attack

Female bonobos routinely form coalitions to stamp out threats from males, but the level of violence in this attack was unprecedented.

LiveScience

Death Valley shrub rearranges its insides to thrive in one of the hottest places on Earth

Heat-loving plants that thrive in California's Death Valley could hold the key to growing crops in a changing climate.

LiveScience

Science history: Experiment shows mutations arise spontaneously, supporting pillar of Darwinian evolution — Nov. 20, 1943

Two bacteriologists showed that mutations arise spontaneously in bacterial cultures, thereby disproving Jean-Baptiste Lamarck's theory of evolution.

LiveScience

Human trash is 'kick-starting' the domestication of city-dwelling raccoons, study suggests

Raccoons that live near humans had shorter snouts than rural raccoons, a trait that tends to arise in the early stages of domestication.

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