Roofr is a Roofing Marketplace with Instant Satellite Roofing Estimates (YC S17)

Roofr uses satellite imagery to give home owners free estimates for roof replacements. They let property owners accurately estimate the cost of their own roofs in seconds simply by entering the property address. After that, Roofr connects the property owner to a roofing contractor within 24 hours. The Roofr solution saves homeowners on average, 20%.

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The Technical Challenges of Measuring Gravitational Waves – Rana Adhikari of LIGO

Rana Adhikari is a Professor of Physics at Caltech and a member of the LIGO team, who were the first to measure gravitational waves.

The Customization Curve

A few months ago, I was talking to a startup about how individual customers wanted them to do different things. I think about this optimization as operating along three variables: cost of customization, happiness generated, and cost to support that customization. The goal is to find a level of customization that makes as many customers as possible happy while not incurring support costs – through personnel or burn – that would kill your company.

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Elizabeth Iorns on Biotech Companies in YC

Elizabeth Iorns is cofounder and CEO of Science Exchange. She’s also an Expert here at YC. She came in to answer some of the most common questions we get from founders in biotech.

YC World

We put together a map that shows where YC companies are from. It’s based on the location of the founders before applying for YC. We believe the global startup ecosystem can support a lot more startups. We would love to see even more people starting companies and we will continue to increase our outreach efforts. As more people from different backgrounds apply, more startups will be funded, a wider range of problems will be addressed and the positive impact will be felt around the world.

Stephanie Simon Guest Edits The Monday Morning Macro

Stephanie Simon, an Admissions Manager at Y Combinator, guest edits our weekly newsletter. Included: climate change-related reads, building products “monkey-first”, an ethical dilemma around automating one’s job, and mini organs.

YC Edtech Night on October 17

This free event will feature edtech CEOs from Y Combinator and Imagine K12 who will share their founder stories and practical startup advice. At the end of the evening, two startups from the audience will be selected for on-stage office hours with YC partners Tim Brady and Geoff Ralston.

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