The squalene industry kills around 3 million sharks each year, and if squalene is used in a vaccine to treat everyone in the world, up to half a million sharks will be killed.

500,000 Sharks Could Be Killed in the Race to Produce a Covid-19 Vaccine

Vaccine developers seek a compound called squalene produced in shark livers

Some of the corpses looked newly dead but have actually been preserved in ice for more than 800 years.

Scientist Unearths a Colony of Mummified Penguins in Antarctica

Melting ice revealed an ancient colony that has never before been recorded

Pollinators perceive the higher levels of UV-absorbing pigments as a darker hue, which could be confusing when they try to scope out colorful flowers to land on.

Flowers Are Changing Color in Response to Climate Change

As temperatures and ozone levels rise, blossoms are adjusting their UV pigmentation

Adult Joshua trees—which can live for 150 years on average—sprouted when temperatures were about 1 degree Celsius cooler than today.

In 'a Huge Victory,' California’s Joshua Tree Becomes the First Plant Protected Due to Climate Change

Experts say that climate change will decimate the population of Joshua trees, but California is taking action

When human men mated with Neanderthal women a hundred thousand years ago, Neanderthals inherited the human Y chromosome.

How Human Y Chromosomes Replaced Those of Neanderthals in a Quiet Genetic Takeover

When the two early human species mated, their genomes changed forever

A regular mouse is pictured on the left of a bulky "mighty mouse."

Space Mice Return to Earth, Mighty as Ever

Their space voyage provides new insights for treating muscle and bone loss

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