A lucky stroke reveals big gaps in how our health care system diagnoses and treats the country's biggest source of disability.

A fresh look at studies finding a less potent warming from the continuing buildup of greenhouse gases.

A short guide to limiting big regrets on the human journey.

New looks at the pace of global warming and sea-level rise.

In a new documentary, students explore efforts to conserve endangered sea turtles in a region focused on fishing.

High school students in Japan discuss journalism and the environment with a blogger in New York.

Tiger scat offers DNA traces that can help conserve Nepal's struggling tiger population.

Can climate forecasts and campaigners convince the world's nations that some carbon is unburnable?

A famous curve of carbon dioxide levels is close to passing a milestone.

A brisk chat between Googlers and a media maven about the emerging Knowosphere.

A new view of the sky above, created by an artist for whom photographs are just the starting point.

A new survey shows how extreme weather influences public attitudes on global warming.

Self-described conservatives eschew efficient light bulbs when they come with green messages.

President Obama cheers on the National Academy of Sciences in its 150th year.

A veteran earth scientist pushes back against dystopian depictions of global warming and the human response.

A short walk on a beautiful spring day.

Mayors, builders and others discuss urban options for energy, resilient design, and more on a crowding planet.

Filmmakers with clashing views of fracking almost meet up at the Tribeca Film Festival.

NASA provides a three-year time-lapse view of the Sun's dynamics.

Researchers find that most continental climates cooled ahead of recent warming.