"TOKYO -- The temperature fell to minus 8.7 degrees Celsius on Sunday morning near Japan's crippled nuclear power plant, causing water pipes and valve seals to rupture, leaking tons of water."

"Workers at the Fukushima Daiichi nuclear plant discovered Sunday that the damaged pipes spilled nearly eight tons of water from 14 locations. Two additional water leaks were discovered today, according to plant operator Tokyo Electric Power Company.

"Companies that disclose greenhouse gas emissions see a small rise in stock price following disclosure, compared to similar companies that keep mum, researchers say."

"Nitrogen fertilizers have been crucial to feeding the increasing number of mouths on earth, but the pollution they leave behind has real consequences that have costs of their own."

The shine of a new iPad and Apple's record profits come at a steep cost: the health of the Chinese workers who make them possible.

"Japan's energy minister admitted on Tuesday that no records were kept of top level discussions in the critical early days on how to respond to the world's worst nuclear disaster in 25 years."

"The sun is bombarding Earth with radiation from the biggest solar storm in more than six years with more to come from the fast-moving eruption."

"Food is getting elbowed out of the discussion on climate change, which could spell disaster for the 1 billion people who will be added to the world's population in the next 15 years. That's the word today from scientists wondering why food and sustainability get such short shrift when it comes to thinking about how humans will adapt to climate change."

"The rapid increase in the number of cities home to more than 10 million people will bring huge challenges … and opportunities."

"Carbon emissions from cement are set to grow explosively as developing countries such as India create a 'first-world' infrastructure. Scientists and entrepreneurs are struggling to push alternative technologies out of the lab and onto the street."