April 22, 2010 is the 40th annual Earth Day celebration
To Read 聞:
1. Nobel Prize-winning economist and Times columnist Paul Krugman’s piece “Building a Green Economy”
2. Jon Gertner’s “Why Isn’t the Brain Green?”
from: New York Times, Lesson Plan 2010/04/21
To Think 思:
global warming and climate change
To Practice 修:
