Most animals reproduce by laying eggs. As the embryo develops, its feeds on the egg yolk. No egg yolk, no offspring, then? Not always. Biologists from KU Leuven, Belgium, have discovered an exception to the rule: the eggs of nematodes (roundworms) can also hatch without egg yolk. The findings were published in Scientific Reports.

Wild birds will sacrifice access to food in order to stay close to their partner over the winter, according to a study by Oxford University researchers.

Scientists from the Department of Zoology found that mated pairs of great tits chose to prioritise their relationships over sustenance in a novel experiment that prevented couples from foraging in the same location.

This also meant birds ended up spending a significant amount of time with their partners' flock-mates.

And, over time, the pairs may even have learned to cooperate to allow each other to scrounge from off-limits feeding stations.

A garnet crystal only one micrometre in diameter was instrumental in a University of Alberta team of physicists creating a route to "lab-on-a-chip" technology for magnetic resonance, a tool to simplify advanced magnetic analysis for device development and interdisciplinary science.

"To most, a gem so tiny would be worthless, but to us, it's priceless," says Mark Freeman, University of Alberta physics professor and Canada Research Chair in condensed matter physics. "It was the perfect testbed for this new method."

A team from the Okinawa Institute of Science and Technology Graduate University (OIST) and its collaborators has sequenced the genomes of two species of small water creatures called acorn worms and showed that we share more genes with them than we do with many other animals, establishing them as our distant cousins.

A new study by scientists in the UK and France has found that Antarctic ice sheet collapse will have serious consequences for sea level rise over the next two hundred years, though not as much as some have suggested.

In many cases, cancer is a lifestyle disease. You are far more likely to get lung cancer if you smoke and the older you get, the more likely you are to get cancer of all kinds. Age is the biggest risk factor and we get more cancer than our ancestors because they died from a lot of other things before cancer could develop.