Study finds India doubled its tiger population in a decade and credits conservation efforts

BENGALURU, India (AP) — India doubled its tiger population in a little over a decade by protecting the big cats from poaching and habitat loss, ensuring they have enough prey, reducing human-wildlife conflict, and increasing communities’ living standards near tiger areas, a study published...

NASA's 2 stuck astronauts take their first spacewalk together

CAPE CANAVERAL, Fla. (AP) — NASA’s two stuck astronauts took their first spacewalk together Thursday, exiting the International Space Station almost eight months after moving in. Commander Suni Williams and Butch Wilmore removed a broken antenna and wiped the station’s exterior...

The oldest evidence for lead pollution comes from ancient Greece

WASHINGTON (AP) — Ancient Greece produced the earliest records of democracy, western philosophy — and, it turns out, lead pollution. Researchers studying sediment cores recovered from mainland Greece and the Aegean Sea have found the oldest known evidence of lead pollution in the...

NASA's two stuck astronauts take their first spacewalk together since arriving at the space station last year

CAPE CANAVERAL, Fla. (AP) — NASA's two stuck astronauts take their first spacewalk together since arriving at the space station last year.

Are we all aliens? NASA's returned asteroid samples hold the ingredients of life from a watery world

CAPE CANAVERAL, Fla. (AP) — Asteroid samples fetched by NASA hold not only the pristine building blocks for life but also the salty remains of an ancient water world, scientists reported Wednesday. The findings provide the strongest evidence yet that asteroids may have planted the...