Having battery troubles? Batteries explained

Find out why your phone's battery performance worsens over time. 

Read more:

1:37 Technology & the future

Latest videos

All videos arrow

How fun with lasers led to a Nobel Prize

1:54
Watch
Video: How fun with lasers led to a Nobel Prize

Small devices solving big problems

2:18
Watch
Video: Small devices solving big problems

Year that was 2021 in science

3:30
Watch
Video: Year that was 2021 in science