Is this how we got the sperm and the egg?
An ancient sexual conflict over mitochondrial inheritance may be responsible for the evolution of the two sexes as we know them.
Here, an alien crew member, Saru on Star Trek: Discovery. We often rely on science fiction to guide our expectations of alien life. We can hope lessons about accepting beings very different from yourself can be extracted by the series end.
(Courtesy of CBS Studios)
Star Trek: Discovery explores our corner of the block -- just a fraction of the galaxy. Some stars are better candidates for intelligent alien life, and it may not be anything like we imagine.
It’s happened before: why we need to plan for the next doomsday event that could wipe out much of life on Earth.
NASA says there are ten "potentially hazardous" asteroids close to Earth. Good reason to make sure we have a backup plan should any catastrophic event wipe of much of life on Earth.
Ridges in the Dresser Formation in the Pilbara Craton of Western Australia that preserve ancient stromatolites and hot spring deposits.
Life on the land could have started millions of years earlier on Earth than first thought. This could change the way we think about life developing elsewhere in the universe.
Can technology help us to beat death?
How far would you go to better your life, to live longer, to beat death? And how much can technology help us in that quest?
This illustration shows Cassini diving through geyser plumes on Saturn’s the ocean world
moon of Enceladus.
Earth is a relatively dry planet compared to some of the other ocean worlds in our Solar system. Life needs water so what about life on these other places?
The latest research dismisses the idea that viruses form a fourth type of life.
Should we make contact with alien life?
We continue to search for intelligent life elsewhere in the universe. But if we find ET there are those who question whether we should make contact or not.
Satellite image of California’s San Andreas fault, where two continental plates come together.
NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team
Fifty years on from a groundbreaking paper, geophysicists have progressed from believing continents never moved to thinking that every movement may leave a lasting memory on our planet.
How many species of frog are in the picture? Genetics often says ‘more than we thought’.
Michael Lee (Flinders University & South Australian Museum)
The Earth is full of many varied species from the largest mammals to the tiniest organisms. But we now think there could be ten times more species than was originally thought.
Some of the Earth’s fault lines between tectonic plates in the East Asia region.
Earth is the only planet in our solar system with both plate tectonics and life. Is there a connection?
The molecules that make up life may have arrived from space, and many are chiral.
NASA / Jenny Mottar
A new theory could explain why the key molecules of life - DNA and RNA - only come in one of two possible forms.
On the hunt for other cultures.
Ask any anthropologist what they do and they will find it hard to give you a direct answer. But it ultimately comes down to studying people and their culture.
Enceladus, with its warm internal ocean, is thought to be potentially habitable.
Marc Van Norden/Flickr
A new theory could change our understanding of the moons in our solar system – and the genesis of life itself.
If you’re looking for life, you’d do well to look for some moons.
As the list of known planets beyond our solar system grows, the search for their moons is intensifying. One reason: they might hold the key to finding life elsewhere in the universe.