A new scientific model suggests that Earth’s oxygen-rich atmosphere may last for around 1 billion more years before a dramatic transformation removes the conditions that support complex life. The ...

Searching for technosignatures—signs of technology on a planet that we can see from afar—remains a difficult task. There are so many different factors to consider, and we only have the technological ...

Vegetarians need not worry yet—plants will be on Earth for a long time to come. But not forever. The sun will ultimately determine the long-term existence of life on Earth. Its total energy output, ...