Mammals have evolved flight more often than birds. By studying the genes of the sugar glider, biologists have found a ‘molecular toolkit’ for flight membranes that’s been in us all along.
Bird flu is transmitted mainly by wild birds, like these snow geese in Ruthsberg, Md., in January 2023.
Photo by JIM WATSON/AFP via Getty Images
Avian influenza viruses have evolved to infect birds, but the current H5N1 outbreak is also infecting a wide range of mammals. This suggests that it could mutate into forms that threaten humans.
Many hedgehogs are killed when crossing roads.
Photo-SD/Shutterstock
By learning what parts of the brain are crucial for imagination to work, neuroscientists can look back over hundreds of millions of years of evolution to figure out when it first emerged.
A hyacinth macaw (Anodorhynchus hyacinthinus).
Tristan Barrington/Shutterstock
Abi Gazzard, International Union for the Conservation of Nature; Connor Panter, University of Nottingham, and Rosalind Kennerley, International Union for the Conservation of Nature
Rodents are the most numerous – and least studied – of all Earth’s mammals.
Reindeer have adapted to the dim, blue light of the Arctic winter.
Alice/Wikimedia Commons
In winter, light in the northern latitudes is dim and very blue compared to summer light. Reindeer eyes have evolved to be better suited at seeing in this unique environment.
New research shows rewilding with invertebrates – insects, worms, spiders and the like – can go a long way in bringing our degraded landscapes back to life.
Koalas are often regarded as cute but dumb: slow, sleepy and incapable of change. But they have been known to approach humans for help. And maybe they have been set free by their remarkable diet.
An artist’s impression of the Pantolambda bathmodonH Sharpe
A new study shows that when free-ranging cats are more than a few blocks from forested areas in cities, such as parks, they’re more likely to prey on rats than on native wildlife.
Taxonomy, or the study of classifying species, plays a key role in biodiversity conservation.
Aarthi Arunkumar/Moment via Getty Images
Thanks to our new technique using fossilised tracks, we have been able to learn more about the locomotion of the largest creatures ever to have roamed this planet.
Forests around the world will need to shift their ranges to adapt to climate change. But many trees and plants rely on animals to spread their seeds widely, and those partners are declining.