At the Green Microgym in Portland, Oregon, users can generate electricity as they burn calories on some of the exercise machines. The human engine runs on calories. A bowl of cereal has about 300 calories, which provides enough energy for an hour's worth of walking. An average bicyclist pedaling at road speed is producing around 75 watts of power. Lance Armstrong supposedly generated 500 watts while climbing hills in the Tour de France.

The pace of ice retreat in Antarctica was estimated in the past to be about 164 feet each year — between glacial cycles. But today, ice retreat is about more than 20 times that rate — more than 3,200 feet per year.

The National Oceanic and Atmospheric Association's (NOAA) annual "Arctic Report Card" – a comprehensive review of the North Pole's health that is assembled by more than 60 scientists.

The Esieh Lake, North Alaska is a strange one. It never fully freezes. It hisses and it literally boils with ancient gas. If you light a fire over its surface, flames will burst towards you. And all that is because it’s full of methane.

New research on global warming warns that San Francisco and 11 other major US airports are at risk of getting flooded. A team of scientists found out that the Bay Area is already sinking by just 0.06 inches (2 mm) a year, while other areas are falling at 10 times that rate.

Recent findings say that the Antarctic continent’s stability may be in danger. Sea levels would tremendously rise, threatening minor settlement and the cities we consider the pinnacle of human civilization.

On August 27, 2017, stones bearing ominous messages have resurfaced in the Elbe River, in Central Europe – running from the Czech Republic into Germany. Over the past centuries, Europeans marked low water levels during droughts by carving lines and dates into boulders along the river.

"Though unchanged from 2018, this setting should be taken not as a sign of stability but as a stark warning to leaders and citizens around the world," Rachel Bronson, The Bulletin of Atomic Scientists (BAS) president and CEO, said in a statement. The Doomsday Clock was originally conceived in 1947 by a cadre of former Manhattan Project physicists, and was meant to symbolically picture how close humans were to nuclear annihilation.

84 percent of the 1.5 million wildfires reported from 1992 to 2012 in the United States, were caused by humans, while 16 percent were sparked by a lightning strike, according to a 2017 study.

On February 15, The Siberian Times published the “ghostly pictures of dark snowscapes – which should be pristine white”. And indeed, eerie black snow covered a few towns situated in the Siberian region of Kuzbass (Kuznetsk Basin). This is one of the world's largest coal fields, spanning more than 10,000 square miles, but also the home of 2.6 million people.