Chris Packham examines some of the weirdest natural events on the planet. With the help of footage taken by eyewitnesses and news crews, he unravels the facts behind each story ...

Copyright © 2025 BBC. The BBC is not responsible for the content of external sites. Read about our approach to external linking.

Mother Earth is clearly urging a call to action. Nature is suffering. Oceans filling with plastic and turning more acidic. Extreme heat, wildfires and floods, have affected millions of people.

(A) Nucleoside triphosphates serve as a substrate for DNA polymerase, according to the mechanism shown on the top strand. Each nucleoside triphosphate is made up of three phosphates (represented ...