Connect with us

Science & Technology

How Satellites Are Supporting Farmers Across Africa | Catherine Nakalembe | TED

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…

Published

on

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. (Recorded at TED Fellows Films 2025 on April 7, 2025)

Join us in person at a TED conference:
Become a TED Member to support our mission:
Subscribe to a TED newsletter:

Follow TED!
X:
Instagram:
Facebook:
LinkedIn:
TikTok:

The TED Talks channel features talks, performances and original series from the world’s leading thinkers and doers. Subscribe to our channel for videos on Technology, Entertainment and Design — plus science, business, global issues, the arts and more. Visit to get our entire library of TED Talks, transcripts, translations, personalized talk recommendations and more.

Watch more:

TED’s videos may be used for non-commercial purposes under a Creative Commons License, Attribution–Non Commercial–No Derivatives (or the CC BY – NC – ND 4.0 International) and in accordance with our TED Talks Usage Policy: . For more information on using TED for commercial purposes (e.g. employee learning, in a film or online course), please submit a Media Request at

#TED #TEDTalks #Technology

Continue Reading
Advertisement
13 Comments

13 Comments

  1. @akbar-b7j

    November 20, 2025 at 11:04 am

    First comment 🎉

  2. @MostafaHasni-d9f

    November 20, 2025 at 11:20 am

    دوست داشتم زبان بلد بودم متوجه مشدم❤

  3. @KreakritP

    November 20, 2025 at 11:28 am

    Sun and rain support you food plan

  4. @TechnophileGuy

    November 20, 2025 at 11:32 am

    Insightful!!

  5. @MrSmurphking

    November 20, 2025 at 11:35 am

    Interested in the application of this date and models to identify areas of earthwork potential for wetland creation for water storage.

  6. @ANKURSONI-jp1eo

    November 20, 2025 at 12:28 pm

    Ankur

  7. @ANKURSONI-jp1eo

    November 20, 2025 at 12:28 pm

    Prince

  8. @ANKURSONI-jp1eo

    November 20, 2025 at 12:29 pm

    Lalu ram

  9. @ANKURSONI-jp1eo

    November 20, 2025 at 12:29 pm

    Asur

  10. @mdmaminulislam

    November 20, 2025 at 12:44 pm

    Thank you, well appreciated work.

  11. @marcappiah6862

    November 20, 2025 at 3:41 pm

    Well done Prof. Nakalembe. This is interesting and impactful work. I have started your research updates on Scholar in eager anticipation for your next publication.

  12. @JenniferJaws5283

    November 20, 2025 at 7:30 pm

    With wonderful technology, rain and moisture can be produced and targeted to specific areas to keep drought, famine and pestilence. Thank the wonderful agriculture science and crop dusters who changed from dropping toxic pesticides to life enriching nutrients that feed soil and crops. Where would Africa look like with out Jane Goodal! This is crap! Unfortunately it is also what intelligent people call propaganda !

  13. @lifemotivation6789

    November 21, 2025 at 9:54 am

    Amazing work! Using satellite data and AI to support farmers in Africa is a game-changer. Mapping crops, predicting disasters, and providing actionable insights can truly save lives and livelihoods. Technology applied with purpose can transform food security.

Leave a Reply

Your email address will not be published. Required fields are marked *

Popular Science

Americans loved drinking radioactive ‘miracle water’ in 1920s

Radithor promised to cure everything from wrinkles to leukemia, but its unintended results were deadly. Watch the full video:

Published

on

Radithor promised to cure everything from wrinkles to leukemia, but its unintended results were deadly.

Watch the full video:

Continue Reading

Science & Technology

How to handle layoffs with compassion with Ayal Yogev, Anjuna

This week’s guest is Ayal Yogev, co-founder and CEO of Anjuna Security, who has experienced both sides of the startup journey: scaling quickly during the boom years and then making the incredibly difficult decision to lay off a significant portion of his team when the market shifted. From growing to 75 employees to scaling back…

Published

on

This week’s guest is Ayal Yogev, co-founder and CEO of Anjuna Security, who has experienced both sides of the startup journey: scaling quickly during the boom years and then making the incredibly difficult decision to lay off a significant portion of his team when the market shifted.

From growing to 75 employees to scaling back and rebuilding, Yogev learned firsthand that the hardest part of leadership isn’t hiring fast, it’s making tough decisions with care, transparency, and integrity.

In this episode, Isabelle Johannessen and Yogev unpack what it really means to lead through layoffs with compassion and how founders can support their teams even in the most challenging moments. They also explore the lessons learned from scaling too quickly and how to build a more resilient company the second time around.

Apply to Startup Battlefield: We are looking for early-stage companies that have an MVP. So nominate a founder (or yourself): techcrunch.com/apply. Be sure to say you heard about Startup Battlefield from the Build Mode podcast.
TechCrunch Disrupt: If you’re thinking about applying to Startup Battlefield, then October 13 to 15 in San Francisco, we’re back for TechCrunch Disrupt, where the Startup Battlefield 200 takes the stage. So if you want to cheer them on, or just network with 1000s of founders, VCs, and tech enthusiasts, then grab your tickets.

Use code buildmode15 for 15% off any ticket type.

New episodes of Build Mode drop every Thursday. Hosted by Isabelle Johannessen. Produced and edited by Maggie Nye. Audience development led by Morgan Little. Special thanks to the Foundry and Cheddar video teams.

Chapters:
00:00 We grew too fast
02:30 What Anjuna actually does
04:45 Scaling the team quickly
06:10 The market crash hits
09:40 Handling layoffs with empathy
12:10 Supporting employees the right way
15:30 Why culture matters in crisis
20:50 The hiring mistake founders make
27:40 When to scale your sales team
34:40 Rebuilding after layoffs

Continue Reading

CNET

First Look at Dyson’s $99 HushJet Mini Cool Portable Fan 🪭

Dyson has now entered the handheld fan space. The company just unveiled the HushJet Mini Cool, a 7.5-oz fan with five speeds and a boost mode for airflow up to 55 mph. It costs $99 and comes in three colors: blush pink, available now; red, available in May; and blue, available in June. Dyson’s Senior…

Published

on

Dyson has now entered the handheld fan space. The company just unveiled the HushJet Mini Cool, a 7.5-oz fan with five speeds and a boost mode for airflow up to 55 mph. It costs $99 and comes in three colors: blush pink, available now; red, available in May; and blue, available in June. Dyson’s Senior Design Manager Stuart Thompson gave us a walkthrough of the device. 🪭🥵 #dyson #hushjetminicool #portablefan #handheldfan #Tech

Continue Reading

Trending