Philippe Grandcolas, deputy scientific director at the CNRS Institute of Ecology and Environment, reviews the major issues at stake at the COP15 conference being held in Montreal, Canada, from 7 to 19 December.
Earth's smaller sister planet, Mars, may have seen the emergence of life in its early history. To be certain, NASA's rovers Curiosity, launched ten years ago, and Perseverance, which landed on the Red Planet in February 2021, continue to explore the surface in search of evidence. CNRS News takes a look at what they've discovered so far.
