Uncategorized
- Planetary Science
Space experts say sending humans to Mars worth the risk
At a meeting in Washington, NASA and aerospace reps discuss the hopes and hurdles of landing a crew on Mars by the 2030s.
- Physics
The center of Earth is younger than the outer surface
Einstein’s general theory of relativity predicts the center of the Earth is two years younger than the crust.
- Astronomy
Young sun’s super solar flares helped set early Earth up for life
Super solar flares may have provided early Earth with planet-warming and life-building molecules.
- Life
Scientists find way to break through bad bacteria’s defenses
Enzymes can break down bacterial biofilm’s sugary walls.
- Climate
Zapping clouds with lasers could tweak planet’s temperature
Breaking up the ice particles inside cirrus clouds could make them reflect more light, turning them into a tool to combat global warming.
- Tech
Insect-sized bot is first to both fly, land
A tiny aerial robot nicknamed RoboBee uses static electricity to perch on surfaces midflight. The landing device could one day help robots conserve energy during search and rescue missions.
- Genetics
Risk identified in procedure for ‘three-parent babies’
Resurgent mitochondria could spell trouble for disease therapy.
- Neuroscience
Wiping out gut bacteria impairs brain
Antibiotics that wiped out gut bacteria curbed brain cell production in mice, a new study finds.
- Genetics
Some Stone Age humans ventured back to Africa
DNA from an ancient woman suggests some humans trekked back to Africa.
- Oceans
Ancient tsunamis reshaped Mars’ landscape
Ancient tsunamis generated by meteorite impacts may have reshaped ocean coastlines on Mars.
- Life
1.56-billion-year-old fossils add drama to Earth’s ‘boring billion’
Ancient multicellular eukaryotes big enough to be seen by the naked eye discovered in 1.56-billion-year-old rock in China may be an ancestor of modern algae.
- Oceans
The Arctic Ocean is about to get spicier
Variations in the saltiness and temperature of seawater of the same density, called spiciness, could increase as the Arctic Ocean warms.
