Author Archives: David


I’m now working for SkyTruth on an exciting environmental “Big Data” project, Global Fishing Watch. Just last week, a number of my colleagues published a paper in Science, which you can read about in this blog post I wrote. The … Continue reading

Posted in Maps | Leave a comment


At EcoWest we are working on some graphics to show snowpack across the country. Here’s one I’ve built for California:

Posted in Uncategorized | Leave a comment

Climate Change and the Global Economy: Is the South Doomed?

This week negotiators are wrapping up the most important U.N. climate meeting since Copenhagen. In the lead-up to these meetings, almost every country on earth submitted a plan for how they will reduce their emissions. These pledges, while better than … Continue reading

Posted in climate, Maps | Leave a comment

What’s in the INDCs?

In the run up to this year’s U.N. climate conference in Paris, almost every nation in the world submitted a plan for how they will work to reduce their greenhouse gas emissions and adapt to climate change. These plans, called … Continue reading

Posted in climate | Leave a comment

California’s Snowpack and Reservoirs

Recent headlines told a dramatic story. By the end of May, California’s snowpack was “zero percent of normal,” and another paper reported “California Snowpack Survey Canceled” due to a lack of snow. I knew it had been a bad snow … Continue reading

Posted in Water | Comments Off on California’s Snowpack and Reservoirs

All The World’s Power Plants

When traveling across China by bicycle, I was amazed by how we seemed to pass a new power plant almost every day. I found myself wanting a map of where the power plants were in the country. Are they everywhere, … Continue reading

Posted in Maps | Leave a comment

Interactive Map of Ride for Climate Asia

On Lindsey’s and my recent journey across Asia, I was sure to record every day on our Garmin GPS. This not only helped me get a few “King of the Mountains” on Strava, but more importantly, it allowed us to … Continue reading

Posted in Maps | Leave a comment

All the World’s Reservoirs

Here’s a little project I’ve been working on: All of the world’s reservoirs, as seen by the GRanD database. I think it still needs a few tweaks — let me know if anything looks off. Reservoir capacity is proportional to … Continue reading

Posted in Maps | Leave a comment

Fun with Python and Basemap

I recently re-edited my film Ten Tips for Biking Eastern Europe to submit to the Banff Film Festival (yes, a reach, but why not?). I had to alter the film because the old version uses Google Earth to show our … Continue reading

Posted in Maps | Leave a comment

Where My Friends Have Traveled

A few months ago, we had a housewarming party and about 30 guests, mostly people roughly my age living in San Francisco, attended. I put a map of the world on the wall, and we asked people to mark each … Continue reading

Posted in Uncategorized | Leave a comment