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Some spiders build delicate little nets, others colossal web megacities, and now some in Peru and the Philippines have been found sculpting giant doppelgängers out of silk, prey carcasses, and debris.

Even a boneless, gelatinous sack lacking a dedicated anus and brain needs its beauty sleep, a new study by researchers from Bar-Ilan University in Israel finds.

An object spotted in deep space is the strongest candidate yet for a galaxy arrested during early development.

The notion behind intermittent fasting is simple: eat less for a time, improve your metabolism.

Tropical coral reefs cover less than 1% of the seafloor, yet support 25% of all marine species.

A marathon pushes the human body close to its limits.

Every human born on this planet is not entirely themselves.

It's a mistake you hopefully only make once.

We spend a third of our lives asleep.

Our bodies age at different rates, sometimes closely correlated to the years we've spent alive, and sometimes less so.