Soar above London along the world's fastest urban zip line
July 25, 2017, 8:24 a.m. by Matt Hickman
You can fly! New attraction on the River Thames caters to urban adventurers with Peter Pan aspirations.
7 fire lookout towers where you can spend the night
July 19, 2017, 8:20 a.m. by Matt Hickman
After years of service, many fire lookout towers in national forests are now campsites-in-the-sky.
Our nation's capital is rich with fountains, but why are so many bone dry?
July 17, 2017, 6:59 a.m. by Matt Hickman
The National Park Service is drowning in busted water features.
Scientists unlock the mystery behind Roman concrete's amazing longevity
July 10, 2017, 7:27 a.m. by Matt Hickman
The very thing that causes modern concrete structures to corrode has sustained ancient Roman construction over eons.
This has to be the world's first solar farm that can be described as 'cute'
July 7, 2017, 12:43 p.m. by Matt Hickman
A panda-shaped solar power plant? Only in China.
The growing pains of China's massive reforestation project
July 5, 2017, 7:23 a.m. by Matt Hickman
70 million acres is impressive, but the formula has one flaw.
America's mayors are the renewable energy champions we need right now
July 5, 2017, 7:22 a.m. by Matt Hickman
From San Diego to Columbia, South Carolina, mayors are leading the march toward a cleaner future.