Dryland Farmers Work Wonders without Water in U.S. West
A generation of extremely efficient farmers increasingly sees irrigation as a nonviable alternative while mulling over a switch from water-intense cotton and wheat to rain-fed sorghum and grains
Is There a Future for Airships?
A safer generation of airships, otherwise known as dirigibles, is trying to usher in a low-carbon future for air cargo
Reliance on Indirect Evidence Fuels Dark Matter Doubts
Pinning down the universe's missing mass remains one of cosmology's biggest challenges
Testing the Waters with Tidal Energy
Tidal power may be destined to remain a niche player in the U.S. energy portfolio, but the low-carbon energy source has one key advantage over wind and solar--it's as dependable as the moon's phases
Southern Hemisphere's Largest Telescope Hamstrung by Optical Problems
As South Africa angles for a massive telescope project, its own SALT telescope has been offline for a year
Without the Moon, Would There Be Life on Earth?
By driving the tides, our lunar companion may have jump-started biology--or at least accelerated its progression
Seeking Out the Sun's Long-Lost Siblings
A new proposal contends that stars formed alongside our sun might be recognizable, even after billions of years of separation