American men have half the sperm they used to
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Fires have always burned in the planet’s temperate forests. They hasten regeneration by thinning undergrowth and fertilizing the soil. Before there were humans to flick cigarette butts into the brush, there were lightning storms and cyclical droughts.
For almost a decade, residents of some Pennsylvania counties have complained that the natural gas prospectors nearby have contaminated their water. Locals say that after the fracking for gas began, the water made them sick, that it turned brown, even that it became flammable.
Legislation like the Clean Water Act has helped check the effluent flowing into rivers and streams. Though that fight is far from over, a new, all-too-modern danger has meanwhile seeped invisibly into waters around the world: legal and illegal drugs. And their effect on the ecosystem is poorly understood.
The U.S. government regulates many sectors of the economy and American life, from health and the environment to energy and food, and most rules come with tradeoffs. For example, regulations that ensure food safety or clean air — which may prevent future health or other costs — may also raise compliance costs for businesses. As the administrative state and the number of regulations have grown, the proper scope of regulation has been a topic of continuous, and often contentious, debate.
The year 2016 was the hottest ever recorded, marking the third consecutive year of record warm temperatures on the Earth’s surface, according to the National Oceanic and Atmospheric Administration (NOAA) and NASA. Of the 17 hottest years in history, 16 have been since 2000. Scientists are unequivocal: we humans are behind global warming.
Investments in efficiency are most cost-effective when electricity prices are highest. Smart meters are helping economists better estimate when electricity is needed to meet consumer demand.
The issue: Imagine: It’s a hot August evening, people are returning home from work and switching on their air conditioners. Electricity demand spikes.