EcoTuesday!

* Kim Stanley Robinson, hero of the environment.

* People will have to be rationed to four modest portions of meat and one litre of milk a week if the world is to avoid run-away climate change, a major new report warns.

* We're double-saved! 'New Facility Uses Algae to Turn Coal Pollution Into Fuel.'

* Except we've already destroyed the oceans and the rainforests.

Closing a few open tabs.

* The New York Times has an article on Fermi problems and the importance of intuition in mathematics. (There's a game.) (Via Boing Boing.) Kottke links to some such calculations at 3quarksdaily, saying they used to be part of the interview process of Microsoft and Google.

* Roger Ebert explains why some people say he gives movies too many stars.

* The new season of the Ricky Gervais podcast is out.

* More radio: an episode of This American Life from May that explains the origins of the mortgage crisis.

* And Bill Gates is investing heavily in algae fuel. We're saved!

Envirolinks!

* Climate Debate Daily, from the good (if too conservative) folks who bring you Arts & Letters Daily, is the latest addition to the ecology section of my sidebar.

* And from way back in February: the top 50 eco blogs, as ranked by the Guardian.

* 25 tips to make your apartment a green paradise.

* More from the the 55-mph wars: Nissan's new ECO pedal "presses back upward when it senses drivers are driving too quickly."

* 'Junk Mail Produces as Much CO2 as 7 States Combined.' Here's how to stop it.

* 'Prepare for global temperature rise of 4°C, warns top scientist.'

* Scientists predict that the disappearance of Arctic sea ice 'will lead to a large-scale transfer of shellfish, snails, and other animals from the Pacific Ocean to the Atlantic.'

* But will algal ethanol save us? Virgin Airlines says yes!