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Europe's coldest decade 1430-1440, which caused famine and hardship across the continent.
Are fossilised rock structures on Mars made by microbes?
The bones of hominin Lucy, show she may have walked upright, but she still climbed trees
A sticking plaster that can record, analyse and monitor dysfunctional heartbeats
The immense geological upheaval created by the meteor that wiped out the dinosaurs
Understanding the huge spike in levels of particulate matter in the air over Delhi
How the recent Italian earthquakes are linked and what this says about what happens next
Science with a spooky edge – bacteria in blood, spiders' silk, and venom stealing virus
The ESA lost contact with its Schiaparelli Mars lander – has it crashed?
Finding the oldest fossilized syrinx, a bird’s equivalent of a voice box.