NASA's oxygen-generating experiment MOXIE completes Mars mission

When the first astronauts land on Mars, they may have the descendants of a microwave-oven-size device to thank for the air they breathe and the rocket propellant that gets them home. That device, called MOXIE (Mars Oxygen ...

Conifer needles found to consume oxygen when times are hard

Plants give us oxygen through photosynthesis—this is commonly taught in school. An international research team has now shown that, particularly in early spring when low temperatures coincide with high light, conifer needles ...

Without ozone, the Earth might get a lot colder

The evolution of Earth's climate contains many components. And new research has shown just how critical the ozone layer is to the surface temperature of the Earth. Without an ozone layer, our planet would be 3.5 Kelvin cooler.

Study examines how DNA damage is repaired by antioxidant enzymes

A typical human cell is metabolically active, roaring with chemical reactions that convert nutrients into energy and useful products that sustain life. These reactions also create reactive oxygen species, dangerous by-products ...

page 2 from 14