21/04/2025

Three ways Pope Francis influenced the global climate movement

The death of Pope Francis has been announced by the Vatican. I first met the late Pope Francis at the Vatican after a conference called Saving Our Common Home and the Future of Life on Earth in July 2018. My colleagues and ...

A new concept for an astrobiology mission to Enceladus

This year's Lunar Planetary Science Conference (2025 LPSC) saw some truly astounding presentations and proposals. These covered a wide range of science and exploration missions that address the priorities of NASA, other space ...

What blew up the local bubble?

In our neighborhood of the Milky Way, we see a region surrounding the solar system that is far less dense than average. But that space, that cavity, is a very irregular, elongated shape. What little material is left inside ...

Searching for life on Mars in the snow and ice

The surface of Mars is extremely cold, irradiated, and desiccated. But at one time, the planet was much warmer and wetter, with flowing water, lakes, and even an ocean covering most of its northern hemisphere. Because of ...

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