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Coronavirus patients wait to be evacuated on Tuesday ahead of Cyclone Nisarga in Mumbai. Ashish Vaishnav / SOPA Images / LightRocket via Getty Images

At least 100,000 people were evacuated along India's west coast as the country's financial capital of Mumbai awaits its first cyclone in more than 70 years.

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A man observes the damages caused to his neighborhood from Tropical Storm Amanda on May 31, 2020 in San Salvador, El Salvador. Guillermo Martínez / APHOTOGRAFIA / Getty Images

At least 14 people were killed when Tropical Storm Amanda walloped El Salvador Sunday, Interior Minister Mario Duran said.

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People make their way through uprooted trees and damaged power lines blocking a road in Taltala a day after Cyclone Amphan hit the city on May 21, 2020 in Kolkata, India. Samir Jana / Hindustan Times via Getty Images

At least 84 people were killed when Cyclone Amphan walloped India and Bangladesh Wednesday, bringing "war-like" destruction to the city of Kolkata in the Indian state of West Bengal, The Guardian reported.

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Floodwaters flowing from the Tittabawassee River into the lower part of downtown Midland on May 20, 2020 in Midland, Michigan. Thousands of residents have been ordered to evacuate after two dams in Sanford and Edenville collapsed. Gregory Shamus / Getty Images

Around 10,000 people were forced to evacuate their homes in central Michigan after heavy rain prompted what the National Weather Service called "catastrophic failures" at two dams.

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Sandy reached its initial peak intensity as a Category 3 hurricane over Cuba on Oct. 25, 2012. NASA Goddard Space Flight Center and NASA Center for Climate Simulation. NASA / GSFC / William Putman

The devastation caused by hurricanes in the Bahamas, Puerto Rico, North Carolina and Houston over the last few years is a direct effect of the climate crisis, which is making tropical storms stronger and wetter, according to a new study from the University of Wisconsin and the National Oceanic and Atmospheric Administration (NOAA), as CNN reported.

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Doha, Qatar is one of the cities that has experienced heat and humidity combinations past the threshold for human survival. Helen_In_UK / iStock / Getty Images Plus

For years, researchers have warned that the climate crisis could expose people around the world to a potentially deadly combination of heat and humidity later in the century.

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As a heat wave descends upon the city, people seek refuge from the record high temperatures at the fountains in Flushing Meadows Park on July 21, 2019 in the Queens borough of New York City. Andrew Lichtenstein / Corbis / Getty Images

By Juan Declet-Barreto

In early April, when social distancing took hold across many places in the U.S. — with school and workplace closings and public life coming to a halt — it seemed like an inopportune time to talk about climate change.

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Below-average temperatures are expected in the Midwest and East this weekend. NOAA / National Weather Service

It will be warmer in Fairbanks, Alaska, than it will be in New York City, Philadelphia, Cleveland and even Atlanta this weekend, AccuWeather predicted Wednesday.

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Oil wells near Hassi Messaoud, Sahara Desert, Algeria. If nothing is done to reduce greenhouse gas emissions, one third of humanity could live in conditions as hot as the Sahara Desert by 2070. DeAgostini / Getty Images

If nothing is done to reduce greenhouse gas emissions, one third of humanity could live in conditions as hot as the Sahara Desert by 2070.

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A winding, dry river in Nevada. A severe drought has engulfed the American Southwest since 2000 Bim / E+ / Getty Images

A severe drought that has engulfed the American Southwest since the year 2000 is likely to soon be the most severe drought since the 800s, according to a new study published in Science.

"This appears to be just the beginning of a more extreme trend toward megadrought as global warming continues," the authors wrote in the study.

A team of researchers from Columbia University conducted the study. They described the ongoing dry spell, which has helped intensify wildfire seasons and threatened water supplies for people and agriculture, as an "emerging megadrought," according to The New York Times.

Of course, nothing is guaranteed. By comparison to the previous 19 years, 2019 was actually a fairly wet year. Unpredictable climate variability may also bring enough rain to the region to end the drought, but global warming boosts the chances that the drought will endure.

"We know that this drought has been encouraged by the global warming process," said lead author A. Park Williams, a bioclimatologist at Lamont-Doherty Earth Observatory at Columbia University, as The New York Times reported. "As we go forward in time it's going to take more and more good luck to pull us out of this."

Scientists have suspected for a while that that the dryness is evolving into a megadrought. The new research not only confirms their suspicion, but also concludes this megadrought may be as bad or worse than anything known before.

"We now have enough observations of current drought and tree-ring records of past drought to say that we're on the same trajectory as the worst prehistoric droughts," said Williams, in a statement, as USA Today reported. This is "a drought bigger than what modern society has seen."

The researchers say that man-made global warming caused about half of this drought. Changes in the climate have contributed to dwindling reservoirs and harsher wildfire seasons.

It all could get much worse.

"Anthropogenic global warming and its drying influence in (southwestern North America) are likely still in their infancy," the study warns, as CNN reported. "The magnitude of future droughts in North America and elsewhere will depend greatly on future rates of anthropogenic greenhouse gas emissions globally."

Without a drastic reduction in greenhouse gas emissions, these droughts are just the beginning.

"The effects of future droughts on humans will be further dependent on sustainable resource use because buffering mechanisms such as ground water and reservoir storage are at risk of being depleted during dry times," the study continues, according to CNN.

To conduct the study, the researchers performed a comprehensive long-term analysis of thousands of square miles, stretching across nine states from Oregon and Montana down through California, Arizona, New Mexico and part of northern Mexico. They looked at 1,200 years of tree ring data, modern weather observations and dozens of climate models, according to CBS News.

The tree rings allow scientist to gauge soil moisture dating back centuries. Williams and his team identified dozens of droughts across the region, starting in 800 AD. Four of those stand out as megadroughts — with extreme dryness that lasted for decades — in the late 800s, mid-1100s, the 1200s and the late 1500s.

The team then compared the ancient megadroughts to soil moisture records from the years 2000 to 2018. The current drought ranked as the second-driest, already outdoing the three earliest ones and on par with the fourth period which spanned from 1575 to 1603, as CBS News reported.

The warmer air during this drought is pulling more moisture from the ground, intensifying dry soils. Furthermore, temperatures in the West are expected to keep rising, meaning this trend is likely to continue.

"Because the background is getting warmer, the dice are increasingly loaded toward longer and more severe droughts," said Williams, as CBS News reported.

An olive tree infected with Xylella fastidiosa is removed from the garden of the Palais Carnoles after being cut on Sept. 10, 2019 in Menton, southern France. YANN COATSALIOU / AFP via Getty Images

A deadly pathogen is spreading across olive trees in Europe and may cause over $20 billion in losses and increase the price of olive oil, according to the BBC.

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