T. Rex May Have Actually Been 3 Species, According to a Close Look at The Bones

A towering colossus and predatory beast, the comically tiny-armed Tyrannosaurus rex is perhaps the most iconic of all prehistoric predators. Its place in the popular imagination is mirrored in academia, with researchers investigating everything from how it walked, to how it mated, to how many there even were.   Despite abundant research into the genus Tyrannosaurus, all adult … Read more

A New, ‘Highly Virulent’ HIV Variant Was Just Discovered in Europe

A newfound variant of HIV, the virus that causes AIDS, has been uncovered in the Netherlands and appears to cause faster disease progression compared with other versions of the virus.   The human immunodeficiency virus (HIV) infects and destroys immune cells called CD4 cells in the body, causing the number of these cells to plummet. … Read more

Hippos Will Aggressively Spray Poop at The Mere Sound of a Stranger’s Wheeze Honk

The hippopotamus is a surprisingly mysterious beast. Although it’s the third largest land mammal, can run a spritely 30 km/h (19 mph) over short distances, and is far more dangerous to humans than a grizzly bear, we know relatively little about its social communication.   A new study working to rectify this lack of knowledge … Read more

Scientists Identify Specific Gene Variant That Protects Against Severe COVID-19

Researchers have discovered a protective gene variant that seems to shield people from severe cases of COVID-19, and the finding could lead to new breakthroughs in fighting the coronavirus.   Since much earlier in the pandemic, scientists have been busily investigating how patient genetics influence the severity of a SARS-CoV-2 infection, exposing the inherited factors … Read more

Eating Less Red Meat Is Something Individuals Can Do to Help the Climate Crisis

When I give public lectures about the climate crisis, the most common question people pose is: “Are you an optimist or a pessimist?” My answer is yes. California has achieved dramatic emissions reductions in a thriving economy, which makes me hopeful, yet in general the fossil-fuel industry is determined not to change. The second most … Read more

FDA Just Approved The World’s First Injectable Medication to Prevent HIV

The world’s first injectable medication to reduce the risk of acquiring HIV has been approved by the Food and Drug Administration (FDA), the agency announced Monday (December 20).   The injectable drug – called Apretude or its generic name, “cabotegravir extended-release injectable suspension” – provides an alternative to daily pills for HIV prevention, such as Truvada and Descovy. These pills are … Read more