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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

The VC Backing the American Dream with Manan Mehta, Unshackled Ventures

Immigrant founders have built some of the world’s most valuable companies, but many still face barriers that make it harder to get a startup off the ground. Visa restrictions, limited access to friends-and-family capital, shallow networks, and a venture industry built around pattern matching can keep promising founders from getting funded before they have a…

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Immigrant founders have built some of the world’s most valuable companies, but many still face barriers that make it harder to get a startup off the ground. Visa restrictions, limited access to friends-and-family capital, shallow networks, and a venture industry built around pattern matching can keep promising founders from getting funded before they have a chance to prove themselves.

In this episode of Build Mode () , host Isabelle Johannesen sits down with Manan Mehta, co-founder and managing partner of Unshackled Ventures, () to talk about why he believes immigrant founders represent one of venture capital’s biggest overlooked opportunities. Manan breaks down how Unshackled built an investment model designed to help founders navigate immigration barriers, why traditional VC pattern matching causes investors to miss potential outliers, and how his team evaluates founders at day zero—often before they have a product, customers, or traction. He also explains why the structural gaps that make some founders harder to fund may be exactly where investors should be looking for outsized returns.

They get into:

The four structural barriers immigrant founders face when starting companies in the U.S.

How Unshackled Ventures helps founders navigate visas while building their startups

Why VC’s reliance on pattern matching can cause investors to miss outlier founders

How Manan evaluates founders before they have a product, customers, or traction

The IQ, AQ, EQ, and SQ framework Unshackled uses to evaluate founder potential

Why resilience, lived experience, and a founder’s relationship to the problem can matter more than a polished pitch

Why structural gaps can create some of the biggest opportunities for investors

How founders without traditional networks can find alternative paths to early capital

Why founders should understand their personal “why” instead of trying to fit the traditional VC mold

Subscribe to Build Mode on Apple Podcasts () , Spotify () , or wherever you like to listen () . And watch the full videos on YouTube () . New episodes of Build Mode () drop every Thursday.

Chapters:

00:00 – Why VCs Miss Outlier Founders

01:45 – Why Manan Mehta Founded Unshackled Ventures

04:15 – The Problem With VC Pattern Matching

06:15 – The Friends-and-Family Gap for Immigrant Founders

08:18 – How Unshackled Helps Founders Navigate Visas

10:40 – Building a Startup in Today’s Immigration Environment

12:19 – Solving One of Unshackled’s Hardest Immigration Cases

14:39 – What the U.S. Stands to Lose16:59 – Raising Unshackled’s First Venture Funds

19:40 – Can You Start a Company on an H-1B Visa?

22:13 – How to Evaluate a Founder at Day Zero

28:30 – Measuring IQ, AQ, EQ, and SQ

30:26 – How Fear Drives VC Pattern Matching

33:01 – Why Structural Gaps Create Outlier Opportunities

35:14 – Finding Startup Capital Outside Traditional VC

38:09 – Why Founders Need to Understand Their “Why”

Hosted by Isabelle Johannesen. Produced and edited by Maggie Nye. Audience development led by Morgan Little. Special thanks to the Foundry and Cheddar video teams.

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Science & Technology

The High Risk, High Reward Model of Backing Immigrant Founders l Build Mode

Immigrant founders have built some of the world’s most valuable companies, but many still face barriers that make it harder to get a startup off the ground. Visa restrictions, limited access to friends-and-family capital, shallow networks, and a venture industry built around pattern matching can keep promising founders from getting funded before they have a…

Published

on

Immigrant founders have built some of the world’s most valuable companies, but many still face barriers that make it harder to get a startup off the ground. Visa restrictions, limited access to friends-and-family capital, shallow networks, and a venture industry built around pattern matching can keep promising founders from getting funded before they have a chance to prove themselves.

In this episode of Build Mode, host Isabelle Johannesen sits down with Manan Mehta, co-founder and managing partner of Unshackled Ventures, to talk about why he believes immigrant founders represent one of venture capital’s biggest overlooked opportunities. Manan breaks down how Unshackled built an investment model designed to help founders navigate immigration barriers, why traditional VC pattern matching causes investors to miss potential outliers, and how his team evaluates founders at day zero—often before they have a product, customers, or traction. He also explains why the structural gaps that make some founders harder to fund may be exactly where investors should be looking for outsized returns.

Subscribe to Build Mode:
Apple Podcasts
Spotify
Wherever you like to listen
New episodes of Build Mode drop every Thursday.

Chapters:
00:00 – Why VCs Miss Outlier Founders
01:45 – Why Manan Mehta Founded Unshackled Ventures
04:15 – The Problem With VC Pattern Matching
06:15 – The Friends-and-Family Gap for Immigrant Founders
08:18 – How Unshackled Helps Founders Navigate Visas
10:40 – Building a Startup in Today’s Immigration Environment
12:19 – Solving One of Unshackled’s Hardest Immigration Cases
14:39 – What the U.S. Stands to Lose
16:59 – Raising Unshackled’s First Venture Funds
19:40 – Can You Start a Company on an H-1B Visa?
22:13 – How to Evaluate a Founder at Day Zero
28:30 – Measuring IQ, AQ, EQ, and SQ
30:26 – How Fear Drives VC Pattern Matching
33:01 – Why Structural Gaps Create Outlier Opportunities
35:14 – Finding Startup Capital Outside Traditional VC
38:09 – Why Founders Need to Understand Their “Why”

Hosted by Isabelle Johannesen. Produced and edited by Maggie Nye. Audience development led by Morgan Little. Special thanks to the Foundry and Cheddar video teams.

Continue Reading

Science & Technology

Hands-on With Google’s New Pixel 11 Devices

Get a hands-on look at Google’s new Pixel 11 lineup, from the more durable Pro Fold, an updated new camera bar, and of course, a push for Gemini AI features.

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Get a hands-on look at Google’s new Pixel 11 lineup, from the more durable Pro Fold, an updated new camera bar, and of course, a push for Gemini AI features.

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