Ancient fossils found near Taiwan are reigniting claims about biblical giants — but what does the bone evidence actually support?

One report, four competing theories — and scientists say the bat-to-intermediate-host pathway is already the clear frontrunner for how the virus first jumped to humans.

A single NASA photo from Mars has reignited debate over whether an unidentified object is evidence of life — or just rock and shadow playing tricks.

Nearly 30 dead dogfish sharks washed up on a Jersey Shore beach — and a shark ecologist thinks he knows why this rare mass stranding happened.

A NASA Curiosity rover photo shows a rock formation so jellyfish-like that it's reigniting debate: are we wired to see life where there is none?

Testosterone levels in men are falling, and a University of Michigan professor points to the environment — but is modern life quietly reshaping male biology?

A presidential executive order targeting childhood vaccines rests on a claim scientists have repeatedly tested and rejected — so why does the belief keep driving policy?

GLP-1 drugs shrank depression-linked anhedonia — but researchers are asking whether the same brain blunting could mute joy in healthy people too.

Giant trees were supposed to slow down as they grew taller — now new evidence suggests the biggest ones keep accelerating, defying a decades-old limit theory.

Six years on, no government or lab has cracked COVID's origin — and experts now say a definitive answer may never come.

A major heart drug trial failed to deliver results, putting the inflammation-causes-artery-disease theory — a leading rival to the cholesterol model — under serious pressure.

Cyclospora keeps turning up in fresh produce, and sewage contamination of the food supply is now the most plausible explanation researchers have.

A trial called 'Zeus' just rattled a 25-year-old theory that inflammation doesn't just accompany heart disease — it helps cause it.

Millions of women reportedly missed or doubled up on periods in June — and TikTok's theories are racing ahead of what medical research can actually explain.

An SNU team found 142 galaxies made almost entirely of dark matter — with barely any stars — and that shouldn't exist under the standard model of galaxy formation.

Venus's clouds may be 60% water — a finding that quietly dismantles what scientists thought they knew about why life can't exist there.

A Spanish cave find has shattered the idea that ancient cannibals preyed only on children — adults were on the menu too.

The most famous extinction in history may not have unfolded the way Darwin thought — and scientists now say the long-held explanation is wrong.

A gum-disease bacterium found in Alzheimer's brains raises a charged question: could decades of plaque buildup in your mouth be quietly wiring a neurological catastrophe?

NASA's Curiosity rover spotted something on Mars mid-mission that's reigniting debate over whether life once existed on the red planet.