For four decades, many SETI experiments have focused on finding sharp spikes in frequency but the new study says signals may not stay narrow as they travel away from their home system.

Many of the most damaging invasions do not simply subtract species; they fundamentally remodel the environment, altering habitats, rewiring interactions, and shifting processes in ways that species ...

Invasive species that are introduced into non-native environments threaten ecosystems, wildlife, and human well-being.

Invasive alien species don’t only drive out other native species, they also dramatically transform soils, water and ecosystems. A new assessment tool aims to pinpoint the negative environmental ...

An experiment mimicking conditions on the Saturn moon suggests that cell-like bubbles don’t form in methane lakes, puncturing hopes for alien life.

Scientists simulated an asteroid impact, and Deinococcus radiodurans’ cell membranes made it through. This suggests that life ...

Many people who don’t believe one conspiracy theory about that station—known as the High-frequency Active Auroral Research ...

Radio silence has long puzzled those searching for extraterrestrial intelligence, but the answer might lie much closer to the source of potential signals than previously thought. Conditions around ...

The alien-like machines, described as ‘legged metamachines’, are built from autonomous modules that can be snapped together in a variety of forms. Researchers say the approach could lead to robots ...

The volcanic archipelago, a UK dependent territory 2,400km west of Cape Town, with a population of fewer than 300, has designated nearly 700,000km² of sovereign waters (about three times the land area ...

The views from up in the trees showcase the beautiful southern Indiana landscape, with its rolling hills and forests creating ...

Stellar plasma can smear alien radio signals before they escape their star system, making them harder for astronomers to detect.