What is the Paris climate agreement and why is the US rejoining? https://t.co/jlHvC6IqAc

Coronavirus: Three quarters of discretionary self-isolation support applications rejected https://t.co/zdRNfPaLyp

Rollout of daily testing of close contacts paused in schools https://t.co/DF2ull1rKe

Covid smear-test delays prompt calls for home HPV tests https://t.co/KleAK9EDsD

SLS: Nasa finds cause of 'megarocket' test shutdown https://t.co/eMwVx9z9pc

Natural wonder: Wing 'clap' solves mystery of butterfly flight https://t.co/PY5fndLDAq

Covid: 'Sharp drop' in heart-attack hospital admissions https://t.co/oP2nlCZsyn

RT @digitalplanet: > 80 countries used social media manipulation to influence politics in 2020 – report from @oiioxford.  GPS grazing collars for cows, sheep and goats mean no more fences @Nofence_AS and #CyberSecurity threats from digital connections @BohrFlorian https://t.co/aO4s2VfRvi

Branson's rocket team go 'bonkers' with delight https://t.co/6RVkMayKMs

Covid: Positive antibody tests doubled since autumn https://t.co/oi679XEEq3

Branson's Virgin rocket takes satellites to orbit https://t.co/M7XMrcDJ4W

After Saturday's Nasa #SLS engine test, here's our guide to the giant rocket https://t.co/dM6yr13kJy

A key engine test for Nasa's #SLS "megarocket" has been shut down early. The engines burned for more than a minute before the test was called off https://t.co/VR2EPSXp6i

SLS: Nasa's 'megarocket' set to fire up engines in crucial test https://t.co/hw5B4W2fVd

Government defends Cumbria coal mine green light https://t.co/UXmDh9eshg

Covid: 'Convalescent plasma no benefit to hospital patients' https://t.co/DRH4YToex5

Covid-19: Early signs of lockdown restrictions working https://t.co/Pz3ftDWuo7

Covid-19: Brazil variant already in UK, scientist says https://t.co/B1VFJBXdT5

How worrying are the UK, South Africa, and Brazil Covid variants? https://t.co/8XDE9Mst1R

Electric eels work together to zap prey https://t.co/3qxiDomkW2