• Professor Sadler is this year’s recipient of the Royal Society’s Davy Medal.
• Recognises his work in using inorganic metals in medicine, pioneering the research field of medicinal inorganic chemistry.
• Research includes targeting cancer cells with the metal iridium – thought to have arrived on Earth via the asteroid that caused the dinosaurs’ extinction.

2021 may not have been the year anyone expected, with COVID-19 still making its presence known in our lives and around the world.

But a lot of progress has still been made. From promising new cancer drugs to trialling a cancer blood test, here are some of the top good news stories from the year.