Daring to seek Earth's history contained in glaciers atop the tallest mountains in the world, Dr. Lonnie Thompson found himself on the frontlines of climate change—his life's work evolving into a salvage mission to recover these priceless historical records before they disappear forever.
We believe privacy is a right, not a trade-off. Choose exactly what you're comfortable with. You can change these any time. Full privacy policy.
Essential
Always on
Required for the site to function
Session management, security tokens, login state, and your cookie preference itself. These cannot be turned off. No personal data is shared with third parties.
Analytics
Optional
Helps us understand what content you enjoy
We use anonymised analytics (e.g. Google Analytics) to see which articles perform well, how long people spend reading, and where traffic comes from. This helps us write better content. Your IP address is anonymised and no data is sold.
Personalisation
Optional
Remembers your preferences across visits
Remembers your reading preferences and recently read articles so we can surface relevant content. All data stays in your browser — nothing is sent to our servers.
Advertising
Optional
Used to show relevant ads that support the site
Allows advertising partners to show you ads based on your interests. If you decline, you'll still see ads but they won't be tailored to you. We work with Google AdSense and similar networks. You can opt out globally at youronlinechoices.eu.
Continue reading
You're clearly a fan
Get the best stories in your inbox
Join thousands of readers who get XOTLIST delivered daily. No spam, ever. Unsubscribe anytime.
