Skip to Content
Uncategorized

Hydropower’s Downside

Sometimes you can’t seem to win. Hydropower, which seems one of the greener power sources, is now reported to have negative repercussions as far as greenhouse gases are concerned. This article from New Scientist magazine claims that “hydroelectric power can…
February 24, 2005

Sometimes you can’t seem to win. Hydropower, which seems one of the greener power sources, is now reported to have negative repercussions as far as greenhouse gases are concerned. This article from New Scientist magazine claims that “hydroelectric power can seriously damage the climate. In some cases, the article claims, dams produce more greenhouse gases per unit of power generated than does a fossil fuel-powered plant.

The reason? The carbon tied up in trees and plants in a dammed lake’s footprint rot and release their CO2; and plant matter that decomposes without oxygen results in a build-up of dissolved methane, which is released when the water goes through the dam’s turbine.

Essentially, the article says, man-made reservoirs convert carbon dioxide in the at
mosphere into methane, which is a much more potent greenhouse gas. And there is enough of this going on that countries ought to include it in their carbon budgets.

Deep Dive

Uncategorized

Our best illustrations of 2022

Our artists’ thought-provoking, playful creations bring our stories to life, often saying more with an image than words ever could.

How CRISPR is making farmed animals bigger, stronger, and healthier

These gene-edited fish, pigs, and other animals could soon be on the menu.

The Download: the Saudi sci-fi megacity, and sleeping babies’ brains

This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology. These exclusive satellite images show Saudi Arabia’s sci-fi megacity is well underway In early 2021, Crown Prince Mohammed bin Salman of Saudi Arabia announced The Line: a “civilizational revolution” that would house up…

10 Breakthrough Technologies 2023

Every year, we pick the 10 technologies that matter the most right now. We look for advances that will have a big impact on our lives and break down why they matter.

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.