In high-risk maneuver, New Horizons cruises by mysterious, bowling pin-shaped Ultima Thule, 4 billion miles from Earth.
The spread of the human horde means under a quarter of the world’s habitable land now counts as wilderness.
Some scientists speculate that civilizations destroy the conditions for their own survival. If they are right, an enduring silence may be the real message from other parts of the universe.
The mass of all the people on the planet is more or less 10 times the mass of all living wild mammals.
Astrobiology—the search for alien life—suggests a lesson for us here on earth: Civilization may not be sustainable over geological eras but, rather, self-destroying.
A look at erosion in Taiwan reveals a new set of greenhouse gas sources, raising the possibility that the links between rock, rainfall and climate control may need revision.
The multinational company, like some other oil corporations, has spent millions to mislead the public while profiting off the destruction of our planet.
Scientists say 2017 was the hottest year on record without an El Nino boosting temperatures naturally.