"MONTREAL — You won’t hear alerts about this kind of smog. It’s called electro-smog and groups worried about the growing use of devices emitting radio frequencies — including cellphones, wireless home networks and smart hydro meters — say it should be taken more seriously."

"On Saturday, they brought medical experts to a Montreal environmental fair to raise awareness about the potential adverse health effects of the radio frequencies.

"Scientists have used plant samples collected in the mid-19th Century to identify the pathogen that caused the Irish potato famine."

"Forecast global temperature rise of 4C a calamity for large swaths of planet even if predicted extremes are not reached."

"This Syrian disaster is like a superstorm. It’s what happens when an extreme weather event, the worst drought in Syria’s modern history, combines with a fast-growing population and a repressive and corrupt regime and unleashes extreme sectarian and religious passions, fueled by money from rival outside powers — Iran and Hezbollah on one side, Saudi Arabia, Turkey and Qatar on the other, each of which have an extreme interest in its Syrian allies’ defeating the other’s allies — all at a time when America, in its post-Iraq/Afghanistan phase, is extremely wary of getting involved."

"WINDSOR, Ontario — Assumption Park gives residents of this city lovely views of the Ambassador Bridge and the Detroit skyline. Lately they’ve been treated to another sight: a three-story pile of petroleum coke covering an entire city block on the other side of the Detroit River."

"The Arctic Council agreed on Wednesday to admit emerging powers China and India as observers, reflecting growing global interest in the trade and energy potential of the planet's Far North."

"Fish and other sea life have been moving toward Earth’s poles in search of cooler waters, part of a worldwide, decades-long migration documented for the first time by a study released Wednesday."

"Experts judged on Wednesday that a reactor on Japan's west coast is located on ground at high risk of an earthquake, setting in motion a process that will likely lead to the first permanent shutdown of a nuclear plant since the 2011 Fukushima crisis."

"Ninety-seven percent of scientists say global warming is mainly man-made but a wide public belief that experts are divided is making it harder to gain support for policies to curb climate change, an international study showed on Thursday."

"LONDON — The authorities on Tuesday raided the offices of several oil companies and an industry data provider as part of a broader inquiry by the European Commission into potential price manipulation."