Archives: Science Alert

An extensive study, involving records from more than 116,000 people over the course of 30 years, has found that moderate amounts of physical activity for between 300 and 600 minutes could be the sweet spot when it comes to reducing mortality risk.

Earth’s deepest sources of water may not be as old as we once assumed.

Remains recovered from a cave in the Chinese province of Yunnan more than 10 years ago have finally given up their secrets, with a DNA analysis revealing not just who left them, but ultimately where their ancestors would go.

Our DNA is packed into our nucleus pretty damn tightly. Each chromosome is one looong DNA molecule wrapped around proteins called histones, like a very tiny thread on very tiny spools.

Over the last few years, as we have been able to peer back deeper and deeper into the early Universe, astronomers have been discovering something extremely puzzling.


There is no sea creature whose name inspires terror – rightly or wrongly – as much as the great white shark.

Astronauts lose decades’ worth of bone mass in space that many do not recover even after a year back on Earth, researchers said Thursday, warning that it could be a “big concern” for future missions to Mars.

Three-dimensional models of astronomical objects can be ridiculously complex. They can range from black holes that light doesn’t even escape to the literal size of the Universe and everything in between.

From orbit, this landscape on Mars looks like a lacy honeycomb or a spider web. But the unusual polygon-shaped features aren’t created by Martian bees or spiders; they are actually formed from an ongoing process of seasonal change from created from water ice and carbon dioxide.


A strange gap between theoretical predictions and experimental results in a major neutrino research project could be a sign of the elusive ‘sterile’ neutrino – a particle so quiet, it can only be detected by the silence it leaves in its wake.