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Science quiz of the year: 20 questions to test whether you were paying attention in 2021

Seven tips to make your Christmas greener © Getty Images

Seven tips to make your Christmas greener

© Jose Luis Pelaez Inc

A genetic form of hearing loss could be reversed with an advancement in gene therapy

French Bulldogs are more at risk from 20 common health disorders than other breeds

French bulldogs are more at risk of common health disorders than other breeds

What is causing Havana Syndrome, the mysterious illness that has struck hundreds of US diplomats? © Getty Images

Reality Check What is causing Havana Syndrome, the mysterious illness that has struck hundreds of US diplomats and spies?

NASA’s solar probe ‘touches’ Sun for the first time ever © JHU

NASA’s Parker Solar Probe ‘touches’ Sun for the first time ever

Pre-resistance in tuberculosis bacteria spotted for first time © Getty Images

Antibiotic pre-resistance spotted in tuberculosis bacteria for the first time

stars rotating around a supermassive black hole at the heart of the Milky Way

New images zoom right into the black hole at the centre of our Galaxy

How to see the Geminid meteor shower 2021 © Shutterstock

Meteor showers How to see the Geminid meteor shower in December 2021

Palaeontologists figure out how a pterosaur the size of a doubledecker bus was able to fly © James Kuether

Palaeontologists figure out how a pterosaur the size of a double-decker bus was able to fly

© Princeton Computational Imaging Lab/Nature communications 2021

Scientists build full-colour camera the “size of a grain of salt”

How to shrink your pet's carbon pawprint © Getty Images

Reality Check How big is my pet’s carbon pawprint and what can I do to minimise it?

Gene editing used to create all-male or all-female litters of mice © The Francis Crick Institute

Gene editing used to create all-male or all-female litters of mice

Why it’s time to get excited about the James Webb Space Telescope © NASA/JPL

Why it’s time to get excited about the James Webb Space Telescope

Elderly with elevated heart rates may be at greater risk of dementia © Getty Images

Elderly people with elevated heart rates may be at greater risk of dementia