- 00:21
Introduction of night-time city lights as pollution.
- 00:50
Explanation of light pollution's effect on visibility of stars.
- 04:19
Discussion of the impact of light pollution on sea turtles and bees.
- 06:32
Introduction to the concept of light pollution affecting ecosystems.
- 07:08
Link between light pollution and increased cancer risk.
- 08:56
Economic impact of light pollution discussed.
- 11:46
Kelsey Johnson shares five simple solutions to combat light pollution.
- 13:07
Call to action for audience to experience a true dark sky.
The problem of light pollution -- and 5 ridiculously easy ways to fix it | Kelsey Johnson
Summary
In this TED talk, astrophysicist Kelsey Johnson discusses the issue of light pollution and its impact on various species, including humans. She humorously outlines five simple actions individuals can take to reduce light pollution. The video combines scientific insights with personal anecdotes, illustrating the broader ecological significance of reducing artificial light exposure.
