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TED Talks Daily

How satellites are supporting farmers across Africa | Catherine Nakalembe

TED Talks Daily

TED

Creativity, Ted Podcast, Ted Talks Daily, Business, Design, Inspiration, Society & Culture, Science, Technology, Education, Tech Demo, Ted Talks, Ted, Entertainment, Tedtalks

4.111.9K Ratings

🗓️ 24 October 2025

⏱️ 34 minutes

🧾️ Download transcript

Summary

More than 8,000 satellites orbit Earth, taking photos every day. Food security specialist and TED Fellow Catherine Nakalembe shows how she uses this imagery to help smallholder farmers across Africa prepare for floods, droughts and crop failures. Learn why real innovation isn’t always about shinier technology — it’s about making the tech truly fit the problem it’s solving.

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Transcript

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0:00.0

You're listening to TED Talks Daily, where we bring you new ideas to spark your curiosity every day.

0:12.6

I'm your host, Elise Hugh.

0:14.4

Today's talk is part of our new 2025 TED Fellows films adapted for podcasts just for our TED Talks Daily listeners.

0:21.6

We'll be releasing these special episodes showcasing our amazing fellows on certain Fridays

0:26.0

throughout the rest of 2025 and into the new year. So stay tuned.

0:30.6

The TED Fellows program supports a network of global innovators and we're so excited to share

0:34.8

their work with you. Today, we'd like you to meet the satellite food security specialist, Catherine Nacolembe.

0:41.6

It might be hard to imagine how satellites orbiting in space can help farmers tending to the

0:46.3

soil on Earth.

0:47.3

But for Catherine, who uses satellite technology and machine learning to monitor smallholder

0:52.1

farming, this connection is essential. She shares how satellites

0:56.0

can play a vital role in helping to feed the world, and why even with her bird's eye view,

1:01.3

a grounded bottom-up approach to supporting farmers is just as key. As she puts it, true innovation

1:07.5

isn't about high-tech systems, but about making technology fit the problem.

1:12.2

After we hear from Catherine, stick around for her conversation with Ted Fellows program director,

1:16.9

Lily James Olds.

1:25.4

If farming was your primary source of income, and if you can't grow anything, there's not much you can do.

1:34.1

It's very demoralizing. It's very overwhelming.

1:38.8

A lot of the countries where I work, farmers face fires, pests, diseases, droughts, and floods.

1:45.0

If crops fail, no food is available for a lot of people who depend on what they produce.

1:52.0

It translates into, you know, sometimes an entire generation being undermined.

1:57.0

My name is Catherine Nakalember and I'm a satellite food security specialist.

...

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