Planetary Protection

Living on Earth
The World

When we think of the risks of space travel, we don’t usually think of the dangers we might pose to the extraterrestrial environment. But some scientists say we should make an effort to prevent our microbes from contaminating life forms that might exist on other planets, like Mars. Robin White reports.

Will you support The World with a monthly donation?

Every day, reporters and producers at The World are hard at work bringing you human-centered news from across the globe. But we can’t do it without you. We need your support to ensure we can continue this work for another year.

Make a gift today, and you’ll help us unlock a matching gift of $67,000!