Doctors combine pig kidney transplant, heart device in bid to extend woman's life 3 hours

Here's why experts don't think cloud seeding played a role in Dubai's downpour 6 days

Huge crowds await total solar eclipse in North America but clouds may spoil the view 16 days

What to know about Monday's total solar eclipse in US, Mexico and Canada 19 days

Faster spinning Earth may cause timekeepers to subtract a second from world clocks 27 days

Sun to totally eclipse across North America on April 8 1 month

What's Pi Day all about? Math, science, pies and more 1 month

Four astronauts from four countries return to Earth after six months in orbit 1 month

First Arab woman to graduate NASA training shoots for the Moon 1 month

4 new astronauts head to International Space Station for 6-month stay 1 month

Drying the upper atmosphere: Scientists create new idea to hack warming planet 1 month

Turkey first astronaut returns from 3-week mission to International Space Station 2 months

Ocean sponges suggest Earth has warmed longer, more than thought 3 months

Skyscraper-size asteroid to safely buzz Earth on Friday 3 months

Elon Musk says first human has received implant from Neuralink 3 months

Astronauts from Turkey, Sweden and Italy launch to space station on chartered flight 3 months

Moon landing attempt by US company appears doomed after 'critical' fuel leak 4 months

First US lunar lander in more than 50 years rockets toward moon 4 months

What we know so far about the volcano eruption in Iceland 4 months

Asteroid will pass in front of bright star Betelgeuse to produce a rare eclipse 5 months