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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…

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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)

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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.

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Science & Technology

Investors Are Asking AI About Your Startup

What does ChatGPT say about your startup? Dr. Eike Gerhardt explains why founders should think about what LLMs will find when investors use AI to research their companies. Watch the full episode of Build Mode with Eike and Nephrogen founder Demetri Maxim for more advice on building a stronger investor pitch.

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What does ChatGPT say about your startup?

Dr. Eike Gerhardt explains why founders should think about what LLMs will find when investors use AI to research their companies.

Watch the full episode of Build Mode with Eike and Nephrogen founder Demetri Maxim for more advice on building a stronger investor pitch.

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Science & Technology

A PhD in Pitching Breaks Down a Startup Battlefield Pitch l Build Mode

There is no such thing as the perfect pitch. But you can get close by implementing a few research-backed methods to your delivery, deck, and message. In this episode of Build Mode, host Isabelle Johannesen sits down with Dr. Eike Gerhardt, who has aPhD in pitching and spent nearly a decade studying the science of…

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There is no such thing as the perfect pitch. But you can get close by implementing a few research-backed methods to your delivery, deck, and message.

In this episode of Build Mode, host Isabelle Johannesen sits down with Dr. Eike Gerhardt, who has aPhD in pitching and spent nearly a decade studying the science of startup pitching before starting Autopoiesis Sciences. And he’s joined by Demetri Maxim, co-founder and CEO of Nephrogen, who came in second at TechCrunch Startup Battlefield 2025.

Together, they break down Demetri’s actual Startup Battlefield pitch to unpack what worked, what could be improved, and what research tells us about how investors respond to founders. Eike explains why credibility signals matter, how technical founders can simplify without oversimplifying, and why Q&A should be treated as a second pitch. Demetri shares how he learned to explain complex biotech to generalist investors, how redesigning his deck changed his confidence onstage, and what he would do differently today.
They also explore how body language and authenticity affect a pitch, how investor questions can reveal bias, and how founders can use AI to prepare for difficult Q&A.

Here are the studies mentioned in the episode:
Kanze, D., Huang, L., Conley, M. A., & Higgins, E. T. (2018). “We Ask Men to Win and Women Not to Lose: Closing the Gender Gap in Startup Funding.” Academy of Management Journal
Figge, P., Graf-Vlachy, L., König, A., Demann, F., & Diessner, M. (2025). “Shades of Grey or Black and White? How Entrepreneurs’ Use of Cognitively Complex Language Affects Investor Funding.” Entrepreneurship Theory and Practice
Clarke, J. S., Cornelissen, J. P., & Healey, M. P. (2019). “Actions Speak Louder than Words: How Figurative Language and Gesturing in Entrepreneurial Pitches Influences Investment Judgments.” Academy of Management Journal
Jiang, L., Yin, D., & Liu, D. (2019). “Can Joy Buy You Money? The Impact of the Strength, Duration, and Phases of an Entrepreneur’s Peak Displayed Joy on Funding Performance.” Academy of Management Journal.
Chen, X.-P., Yao, X., & Kotha, S. (2009). “Entrepreneur Passion and Preparedness in Business Plan Presentations: A Persuasion Analysis of Venture Capitalists’ Funding Decisions.” Academy of Management Journal
Zhu, L. Y., Young, M. J., & Bauman, C. W. (2024). “Linking Anxiety to Passion: Emotion Regulation and Entrepreneurs’ Pitch Performance.” Journal of Business Venturing
Allison, T. H., Davis, B. C., Webb, J. W., & Short, J. C. (2017). “Persuasion in Crowdfunding: An Elaboration Likelihood Model of Crowdfunding Performance.” Journal of Business Venturing
Clark, C. (2008). “The Impact of Entrepreneurs’ Oral ‘Pitch’ Presentation Skills on Business Angels’ Initial Screening Investment Decisions.” Venture Capital

Subscribe to Build Mode:
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New episodes of Build Mode drop every Thursday.

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CNET

Sennheiser Momentum True Wireless 5 Review: Just What I Was Asking for

Featuring an improved design, including replaceable batteries, along with better noise-canceling and voice-calling performance, the excellent sounding $300 Momentum TWS 5 are top earbuds contender and earn a CNET Editors’ Choice award. Timecode Chapters: 0:00 Intro 0:21 Design Changes 0:41 Replaceable Batteries 0:56 New Features 1:04 Compared to the Momentum True Wireless 4 1:25 Ear…

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Featuring an improved design, including replaceable batteries, along with better noise-canceling and voice-calling performance, the excellent sounding $300 Momentum TWS 5 are top earbuds contender and earn a CNET Editors’ Choice award.

Timecode Chapters:
0:00 Intro
0:21 Design Changes
0:41 Replaceable Batteries
0:56 New Features
1:04 Compared to the Momentum True Wireless 4
1:25 Ear Tips
1:53 Tight Seal is Crucial
2:01 Sound Quality
2:31 Sony vs Sennheiser
2:48 Noise Cancellation
3:23 Sound Test
3:47 Firmware Update Needed
4:03 Audio Dropouts?
4:14 Robust Connection
4:32 Codecs
4:57 Battery Life
5:17 What Do You Think?

Video Credits:
Host: David Carnoy
Scripted by: David Carnoy
Producer: Numi Prasarn
Camera: Numi Prasarn
Video Editor: Numi Prasarn
Thumbnail Designer: Zooey Liao

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#sennheiser #momentumtruewireless5 #earbudsreview

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