Stories by Annie Sneed

The crested pigeon, found in Australia, has a modified wing feather that helps produce an alarm signal sound to warn other birds when there's trouble.

Its destructive eruptions may help researchers better understand mass extinctions

Countries will map out how to meet their carbon-reduction pledges; U.S. governors and mayors will step up

Experts debate what amateur scientists could accomplish with the powerful DNA editing tool—and whether its ready availability is cause for concern 

Chemical innovations lure in and kill the disease-carrying insects

Sporting groups have entered the political fray in the monuments debate

Global warming already appears to be making hurricanes more intense

Jellyfish exhibit signs of a sleep state, which could mean that sleep predates the evolutionary development of central nervous systems.

Submerged electric eels lose current to water, so they apparently leap into the air to minimize their contact with water and maximize their shock value.

A primatologist says 80 percent of Grauer’s gorillas have disappeared in the past 20 years

Disaster risk expert says intense population growth and urban coastal development have created a huge danger

Both Harvey and Irma intensified due to perfect storm conditions

Tall timber buildings could produce fewer emissions and sequester carbon dioxide

The city is limited by reliance on slow-draining bayous to carry out the rain

Daniel Kammen decries Trump’s attitude and policies on human rights and sustainability 

The agency has released controversial new rules for evaluating a chemical’s risk

Strange creatures known as “rangeomorphs” could help paleontologists understand the origins of animal life

In an exclusive interview Gore also maintains that the Trump administration is relinquishing U.S. climate leadership to China and India

The vice president-turned-environmental crusader takes viewers to climate change’s front lines in his documentary sequel

Satellite and socioeconomic data can pinpoint which of a city’s neighborhoods are most at risk during heat waves

Congressperson Eddie Bernice Johnson plans to hold a series of round tables on critical science issues, including ocean acidification and environmental justice

Taking a cue from weather forecasters, researchers combine satellite measurements and models in attempt to predict volcanic activity

Massive, flexible blades would bend with storm winds like the palm trees that inspired them

Experts explain how land ice thaw and the dynamics of warming water are raising ocean levels