More than many other industries, tourism relies on a stable climate, whether attracting customers to lavish lakes, bountiful beaches or majestic mountains.

Frank Morton has been breeding lettuce since the 1980s. His company offers 114 varieties, among them Outredgeous, which last year became the first plant that NASA astronauts grew and ate in space.

We continue to overspend our budget when it comes to freshwater resources globally. No country is immune; this is not just a challenge for arid regions.

Fits and starts are all too common in the sustainability world.

Fossil fuel companies hold vast oil, gas and coal reserves that help determine their market value.

Follow the money. It is the motto of investigative journalists everywhere.

President-elect Donald J. Trump has vowed to revive U.S. coal production and bring back thousands of jobs.

It’s a basic truth — we tend to see what’s right in front of us.

Don't kill the messenger; Twitter channeled plenty of political poison in the 2016 presidential contest, but it also served as an organizing platform and a therapeutic outlet on a global scale.

Scientists have known for a century that there was a global extinction of large animals at roughly the same time as humans expanded around the world.