What If is a Webby Award-winning science web series that takes you on a journey through hypothetical worlds and possibilities, some in distant corners of the universe, others right here on Earth." ...

The world's tallest mountain technically is not Mount Everest ... pollution.It offers what's arguably the best view of the observable universe, and right now the summit is host to 13 telescopes.

The tallest mountain on Earth — measured not by elevation above sea level but rather from base to peak — is Mauna Kea in Hawaii, standing 33,481 feet (10,205 meters) in height. Malin Space ...