Floods, droughts, heat waves and cold blasts — why is the weather becoming more extreme? Environmentalist and “America’s weatherman” Al Roker discusses the link between climate change and disruptions to weather patterns worldwide, followed by…

No one remembers when you’re right, but no one forgets when you’re wrong. Your local weather person knows that saying all too well. But while they take a lot of the heat (get it?), how…

“How much more damage do we have to endure before we realize that it’s cheaper to save this planet than to ruin it?” asks engineer and investor John Doerr. In conversation with Countdown cofounder Lindsay…

As you get older, your eyes worsen and become susceptible to a disease called age-related macular degeneration — the leading cause of blindness, with no cure in sight. Sharing the science of how your vision…

We’ve been hearing about self-driving cars for years, but autonomous vehicle entrepreneur Aicha Evans thinks we need to dream more daringly. In this exciting talk, she introduces us to robotaxis: fully autonomous, eco-friendly shuttles that…

TED Fellow and education innovator Larry Irvin envisions a world where every child can see themselves reflected in their teachers. With his team at Brothers Empowered to Teach, Irvin is providing pathways to careers in…

What if we had a map of … everything? Jack Dangermond, a visionary behind the geographic information system (GIS) technology used to map and analyze all kinds of complex data, walks us through the interconnected…

Afternoon naps are refreshing — but could they be messing up our sleep cycles? Sleep scientist Matt Walker reveals the pros and cons of napping, plus tips on how to get the most out of…

How we identify makes a difference in our lived experiences, but it’s not always reflected in the checkboxes we see on forms. In this episode, Mona Chalabi explores why language matters in data collection, and…

The financial sector often talks of decarbonizing investment portfolios as a way to fight climate change. But portfolios can be “cleaned” without having any real impact on the problem, says investment expert Nili Gilbert. Bringing…