Earth is setting heat records. It will be much hotter one day. But     1    hot could it get? As a heat wave     2     (roast) the western United States last week, temperatures in California's Death Valley rose to 130 degrees Fahrenheit,     3     (mark) the hottest temperature measured anywhere on Earth since 1931 and the third hottest day ever recorded on our planet. It's difficult     4     (forecast) how hot Earth might get if we keep jamming carbon into the atmosphere,     5     (expert) say. As Michael   Wehner, an extreme weather researcher, put it in an email, "    6     increase in temperatures of future heat waves     7     (depend) a lot on how far into the future and how much more carbon dioxide we send out. ” But a recent research     8     (exact) tells people what the heat waves of tomorrow could look like if we don't control our carbon emissions (排放)at all. By the end of the century, heat waves in California could top out at temperatures about 10 to 14 degrees Fahrenheit     9     (high) than they do today, "I would expect that an event of the same rarity (罕见)     10    Today’s 130°F would be about 140°F in that high-emission future,” Wehner says.

Since     1     first fully artificial plastic was invented in 1907, humans     2     (find) innumerable uses for the material. It has found     3     (it) way into our tools, our clothes and even our bodies. In a new study in     4     (environment) science and technology, researchers estimate the average American eats more than 50,000 pieces of microplastic particles,     5     (small) than 5 millimeters in length every year and breathes in another 50,000. Although the health     6     (effect) of consuming these tiny bits of plastic are unclear, researchers stress the real volume that people are     7     (casual) swallowing is alarming. The largest contributor came     8     drinking bottled water, in     9     the bottle itself added more than 32 times more plastic to a diet     10     (compare) with tap water, The Guardian reports.