Are aliens real? The question has animated conspiracy theories for decades and enthralled at least one former president of the United States. In a recent interview, Barack Obama became the first ...

But the real truth is that alien life on other planets could be even stranger than floating balloons or amorphous organisms ...

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” who look suspiciously like us in rubber suits. The scientists who actually ...

The successful launch and testing of a giant airship-come-wind-turbine earlier this month has prompted discussion on whether they could be the future of sustainable power in China. Called the S2000 ...