LifeAlien plants: The search for photosynthesis on other worlds Looking for signs of life in exoplanet atmospheres is fraught with uncertainty. But now that we can detect polarised light reflected directly off other worlds, we could spot unmistakable evidence of photosynthesis Features
EnvironmentUN climate chief Patricia Espinosa: We can still turn this around It’s a critical time for action on climate change – but the rapid adaptations seen during the covid-19 pandemic offer hope that we can make a breakthrough, says the diplomat in charge of negotiations Features