
Happy, with a 20 Percent Chance of Sadness
Researchers are developing wristbands and apps to predict moods—but the technology has pitfalls as well as promise

Happy, with a 20 Percent Chance of Sadness
Researchers are developing wristbands and apps to predict moods—but the technology has pitfalls as well as promise

Diving Birds Have 45 Percent Fewer Viable Babies after Oil Spill
A study of colonies of a diving bird on the Spanish coast shows the lingering effect during at least the first 10 years after the 2002 Prestige disaster

Elephants Recognize the Voices of Their Enemies
African elephants can distinguish human languages, genders and ages associated with danger.

Did Iconic Archaeopteryx Lose Its Ability to Fly?
The early bird's anatomy matches that of modern flightless birds, a paleontologist says

First Venomous Crustacean Discovered
The cave-dwelling animal uses a neurotoxin to kill prey and digest it before eating it

Fossil Scans Reveal Origins of Teeth
Toothlike structures have been found to originate from outer-body coverings

Speed Test Devised for Wild Cheetahs
A state-of-the-art collar reveals the animal's quick reflexes and phenomenal acceleration

City Life Turns Blackbirds into Early Birds
Urban songbirds also stay active longer, due to an altered biological clock

Why Penguins Cannot Fly
The energy required to swim efficiently is likely what makes some seabirds poor fliers

Giant Squid Reality: There Were Once Few Kraken to Release
The genetic uniformity of giant squid shows that the legendary cephalopods are remarkably vulnerable to extinction today and came close to it at some point in the not too distant past

Bumblebees Sense Electric Fields in Flowers
Electroreception may help pollinators to guess where others have already fed on nectar

How to Eat Triceratops
Tyrannosaurs tore the heads off armored prey to reach their tender neck meat

Fossil Scars Capture Dinosaur Head-Butts
The way dome-skulled dinosaurs bashed heads may help tease apart juveniles from adults or one species from another

Dinos' DNA Demise: Genetic Material Has a 521-Year Half-Life
A new analysis confirms the widely held suspicion that DNA from dinosaurs and ancient insects trapped in amber cannot be recovered to make a 'Jurassic Park'-style theme park

Human Ancestors Interbred with Related Species
Analysis suggests genetic mixing occurred in Africa around 35,000 years ago

Stone Tools Shed Light on Early Human Migrations
Hominins with different toolmaking technologies coexisted