- Steve Somerville/Metroland Earth Day is an annual observance on April 22 that encourages people to demonstrate care for their planet. But efforts to make the world a better, cleaner place to live ...

Osteoporosis Treatments: How Space Is Strengthening Bones On Earth In the harsh environment of space, astronauts experience accelerated bone loss, losing bone mass up to 10 times faster than ...

But on Osiris, the oxygen was found in a simple, atomic form. The oxygen in Earth's atmosphere, in comparison, exists in a more complex form, as molecules, thanks to photosynthesis.

Every year, millions of people worldwide turn off the lights for Earth Hour, but the movement can bring more positive effects than just saving electricity for 60 minutes. On Saturday, March 22, folks ...

Since November 2000, the International Space Station (ISS), a football-field-sized laboratory orbiting 400 kilometres above Earth, has hosted a continuous human presence.

The search for life beyond Earth is a key driver of modern astronomy and planetary science. The U.S. is building multiple major telescopes and planetary probes to advance this search.

If humans are ever going to live beyond Earth, they’ll need to construct habitats. But transporting enough industrial material to create livable spaces would be incredibly challenging and expensive.

Earth Hour's contributions to the climate change battle Turning the lights off for 60 minutes for Earth Hour is a symbolic show of support for the planet that raises awareness of the environmental ...