The effects were both good and bad, but the main takeaway is how vulnerable tourism-dependent animals can be.
Many ecosystems are still at the brink.
Tools and pendants found with the 45,000-year-old remains might have inspired later Neanderthals.
Hundreds of archaeologists pooled their data to get the big picture.
Science reveals the purr-fect way.
Loggers changed the way a river carved into the earth’s crust.
In a good way!
Anatomical compromises from millions of years ago have made birth hard for humans.
Our history is complicated. Our pre-history, even more so.
Like science, tech, and DIY projects?
Sign up to receive Popular Science's emails and get the highlights.