The trick lies in capturing the weak gravitational shifts in the ground.Nature News doi: 10.1038/nature.2017.23045

Embryos found in some fossil eggs suggest that hatchlings struggled to fly.Nature 552 14 doi: 10.1038/nature.2017.23049

Expanded genetic alphabet could allow for the production of new protein-based drugs.Nature 551 550 doi: 10.1038/nature.2017.23040

WHO data suggest around 10% of medications in poorer countries are fraudulent or substandard.Nature News doi: 10.1038/nature.2017.23051

Scientists fear plans to abandon clinical trials of centuries-old remedies will put people at risk.Nature 551 552 doi: 10.1038/nature.2017.23038

WHO data suggest around 10% of medications in poorer countries are fraudulent or substandard.