The LIGO detectors record gravitational waves from two merging black holes, confirming a prediction of general relativity; the result is announced in February 2016.
Jennifer Doudna and Emmanuelle Charpentier show how CRISPR-Cas9 can cut DNA at chosen sites, launching a revolution in gene editing.
CERN announces that the ATLAS and CMS experiments at the Large Hadron Collider have observed a particle consistent with the Higgs boson.
The Event Horizon Telescope collaboration releases the first direct image of a black hole, at the centre of the galaxy M87.
The World Health Organization declares the COVID-19 outbreak a global pandemic.
Israel signs US-brokered agreements normalising relations with the United Arab Emirates and Bahrain.
The United Kingdom gives the first doses of the fully authorised Pfizer–BioNTech COVID-19 vaccine, beginning a global vaccination campaign.