The Solar Impulse powered through 24,500 miles, no fossil fuels needed.
Sometimes the future looks like a toilet plunger, and that's OK.
No one knows what “resilience” really means, so don’t use it in international agreements.
If all goes as planned, it’ll be finalized this fall — and it’ll be good for the ozone layer too.
Thanks to extra-high temperatures this month, California generated enough solar energy in one day to power 6 million homes.
The former Veep won't be in Philadelphia, but he's definitely not voting for Trump.
Virginia Sen. Tim Kaine appears to have an uncanny ability to appeal to people across the spectrum.
The Daily Show host came out of retirement with a message for conservatives.
The former reality TV star has been trying to stop a wind project near one of his golf courses, but he's now out of luck.