Once a month we produce our email updates covering new investments, insights and opportunities at the intersection of startups, cities and climate change. There is no time to waste, so we mark the weeks since we started and begin each subject with the current week. Apply to get our future updates.


Most recent updates (2022-present)

WK533: AI Team Coaching, Climate Pricing, and Startup Success

WK526: Truthiness, resilience and reversions

WK522 (or 10 Years) 🔵🔵🔵

WK518: 24 ideas for 2024

TS Update WK508: Israel, Hamas, & Fossil Fuels

TS Update WK497: Anger, Grit, and Consistency

TS Update WK493: Power Dynamics

TS Update WK486: Renewable roadblocks, heatwave woes, insurance exits, and resilience startups

TS Update WK474: Things were hard, but it's working

TS Update WK466: How happy is this new year?

TS Update WK458 – Gifts, shifts and grifts

Update WK454: Geopolitics and not failing on planetary impact

WK445: Climate Startup Playbook

WK436: Diverging paths: EU vs US climate tech

WK426: Climate Investing 101

WK422 : We have the tech to rapidly ditch fossil fuels

 🔵 Here’s our plan for the next decade. Will you join us?


Pre- Third Sphere (2019-2022)

WK406 - Gifts, resolutions & 24/7 carbon-free electricity

WK400: New credit fund, trends, and plans for 2022

WK392: Pricing, History, and Welcoming Ashtynn + Yana

WK382: Exceptional Talent and Elliptical Climate Effects

WK378: First Urban Us Unicorns

WK374: Every day

WK370: Policy and Capital for Climate Tech

WK364: How it started. How it’s going. 7 Years of Climate, Cities, & Startups

WK362: The Cloud City, Density, Climate Decade and Adaptation

WK354: Time for a New Playbook

WK352: Leadership and two portfolio exits

WK345: Upgrade Cities for Climate Change

WK337: Remote work, real estate and cities

WK330: Black lives, equitable cities, and the next crisis

WK309: Startups help cities beat climate change

WK307: The secret force multiplier of climate action + 7 new startups

WK296: Don Valentine, Climate Resilience & Unicorn Deflation

WK290: Raising less VC money and what does it mean to be a tech company?

WK275: The Urbantech Investor Playbook (+ 7 New Startups)

WK271: NYC Green New Deal & 7 New Urbantech Startups

WK264: Seed Stage Allocation Strategies, City Rankings, Startup Cash, and EVs

WK258: Find the next urbantech unicorn

WK255: Urbantech in 2019

WK249: Better Hardware Startup Math & The Mobility Data Platform 

WK242: Climate Change, Mobility and the Near Term Future of Everything