(CNN) "Upside down" are the only words Manush Albert Alben has to describe life after the powerful Cyclone Idai.

Nearly two weeks since the powerful cyclone destroyed most of the city of Beira, Mozambique, it is a long way from normal. "There's no money, no groceries," Alben, a fisherman, said while sitting in his wooden pirogue on a local beach. "We are suffering but trying to hold on."

Known for its busy port and views of the Indian Ocean, the 19th-century city used to be the fourth largest in the country. Now Beira will go down in history as being "90% wiped out" by global warming, said Graça Machel, a former Mozambican freedom fighter, politician and deputy chair of The Elders, who spoke to CNN on the phone after visiting the city.

"This is one of the poorest places in the world, which is paying the price of climate change provoked mostly, not only but mostly, by the developed world," the 73-year-old added.

Hundreds of square miles are covered by water, flooding an area so vast it can be seen from space. Only when the water recedes completely, says Machel, will Mozambique be able to count the bodies.

The inland floodwaters have yet to clear.

Cyclone Idai is only the latest extreme weather event to blight the region, affecting more than half a million people and filling humanitarian camps with tens of thousands.

The 2015-16 El Niño weather cycle, believed to be the strongest in 50 years, severely affected Southern Africa's food security, according to the UN Food and Agriculture Organization (FAO) . Dry weather conditions in large swathes of Zimbabwe, Malawi, Zambia, South Africa, Mozambique, Botswana, Lesotho, Swaziland, and Madagascar led to about 32 million people being unable to afford or resources to acquire food in 2016.

By 2018, drought, population growth and climate change nearly made Cape Town the first city in the world to run out of water.

"[Cyclone Idai] is a tragic showcase of what can happen in many other similarly situated towns and cities in low and middle income countries," Denis McClean, spokesperson for the United Nations Office for Disaster Risk Reduction, told CNN. "They are vulnerable and they are exposed."

The inequality of climate change

The United Nations estimates that 4.2 billion people have been hit by weather-related disasters in the last two decades, with low-income countries suffering the biggest losses.

Many of the world's poorest live in equatorial regions, which already have high average temperatures. This means a tiny rise can be sharply felt and lead to harsher impacts, according to a 2018 study in Geophysical Research Letter.

Meanwhile, most of the world's richest nations are the largest emission producers -- by burning fossil fuels and modern farming practices that produce climate change causing emissions.

Using climate model projections, the paper found that if global average surface temperatures reached the 1.5 or 2 degree Celsius (3.6 degree Fahrenheit) limit -- set by the Paris Agreement -- countries like Indonesia or the Democratic Republic of the Congo would feel the changes brought on by global warming more keenly than higher latitude countries like the United Kingdom.

Photos: In photos: Cyclone Idai's impact Photos: In photos: Cyclone Idai's impact People receive supplies from a Turkish aid agency in Muabvi village of Beira, Mozambique, on Monday, March 25. Hide Caption 1 of 35 Photos: In photos: Cyclone Idai's impact Children pick up books left to dry after Cyclone Idai damaged their school in Inchope, Mozambique, on March 25. Hide Caption 2 of 35 Photos: In photos: Cyclone Idai's impact Survivors of the cyclone cross a temporary foot bridge to receive aid in Chipinge, Zimbabwe, on March 25. Hide Caption 3 of 35 Photos: In photos: Cyclone Idai's impact The displaced sleep under a mosquito net at a school housing survivors in Beira, Mozambique, on Sunday, March 24. Hide Caption 4 of 35 Photos: In photos: Cyclone Idai's impact Children eat at a school housing the displaced in Beira, Mozambique, on March 24. Hide Caption 5 of 35 Photos: In photos: Cyclone Idai's impact People unload relief supplies from a helicopter in Chimanimani, Zimbabwe, on March 24. Hide Caption 6 of 35 Photos: In photos: Cyclone Idai's impact Veronica Fatia carries her 2-year-old daughter as they travel in a boat to Buzi district outside Beira, Mozambique, on Saturday, March 23. Hide Caption 7 of 35 Photos: In photos: Cyclone Idai's impact Men watch the arrival of a boat carrying displaced families rescued from a flooded area of Mozambique's Buzi district on March 23. Hide Caption 8 of 35 Photos: In photos: Cyclone Idai's impact Displaced families arrive after being rescued from a flooded area of Buzi district in Mozambique on March 23. Hide Caption 9 of 35 Photos: In photos: Cyclone Idai's impact Jessica Mhonderi stands in front of what used to be her son's home in Chimanimani, Zimbabwe, on March 23. Hide Caption 10 of 35 Photos: In photos: Cyclone Idai's impact Men try to salvage appliances from a house damaged by the cyclone in Chimanimani, Zimbabwe, on March 23. Hide Caption 11 of 35 Photos: In photos: Cyclone Idai's impact People unload from a boat in Beira, Mozambique, on Friday, March 22, after being rescued. Thousands remain stranded after Cyclone Idai hit. Hide Caption 12 of 35 Photos: In photos: Cyclone Idai's impact A child is transported via a refrigerator in flooding caused by Cyclone Idai in Buzi, Mozambique, on Thursday, March 21. Hide Caption 13 of 35 Photos: In photos: Cyclone Idai's impact A man carrying his belongings arrives at a school in Chimanimani, Zimbabwe, where the displaced are taking shelter, on March 21. Hide Caption 14 of 35 Photos: In photos: Cyclone Idai's impact A flooded area outside of Beira is seen on March 21. The area was hit by unprecedented flooding following the passage of Cyclone Idai. Hide Caption 15 of 35 Photos: In photos: Cyclone Idai's impact People from the isolated district of Buzi take shelter in the Samora M. Machel secondary school used as an evacuation center in Beira on March 21. Hide Caption 16 of 35 Photos: In photos: Cyclone Idai's impact South Africa National Defense Forces personnel deliver relief aid in Buzi on March 20. Hide Caption 17 of 35 Photos: In photos: Cyclone Idai's impact A vehicle is submerged in floodwaters on March 21 after it got swept away by Cyclone Idai in Nyamatanda, Mozambique. Hide Caption 18 of 35 Photos: In photos: Cyclone Idai's impact People cross a makeshift bridge over a river on Wednesday, March 20, that surged days earlier during Cyclone Idai in Chipinge, Zimbabwe. Hide Caption 19 of 35 Photos: In photos: Cyclone Idai's impact Residents stranded on the stands of a stadium in a flooded area of Buzi, Mozambique, on March 20. Hide Caption 20 of 35 Photos: In photos: Cyclone Idai's impact Soldiers help residents retrieve their lost belongings on Tuesday, March 19, in Chimanimani, Zimbabwe. Hide Caption 21 of 35 Photos: In photos: Cyclone Idai's impact A wounded survivor is evacuated by helicopter from Chimanimani on March 19. Hide Caption 22 of 35 Photos: In photos: Cyclone Idai's impact A family digs on March 19 for their son who got buried in the mud when Cyclone Idai struck in Chimaniman. Hide Caption 23 of 35 Photos: In photos: Cyclone Idai's impact An elderly woman stands amid her destroyed belongings on March 19 in Chimanimani, an area on the border of Mozambique and Zimbabwe. Hide Caption 24 of 35 Photos: In photos: Cyclone Idai's impact Locals stand at the edge of a damaged section of road between Beira and Chimoio, Mozambique, on March 19. Hide Caption 25 of 35 Photos: In photos: Cyclone Idai's impact Soldiers push a drum of jet fuel used for rescue operations in Chimanimani on March 19. Hide Caption 26 of 35 Photos: In photos: Cyclone Idai's impact Mud fills the interior of a household in Chimanimani on March 19. Hide Caption 27 of 35 Photos: In photos: Cyclone Idai's impact Residents search for bodies on March 19 in the Ngangu township of Chimanimani. Hide Caption 28 of 35 Photos: In photos: Cyclone Idai's impact Survivors are escorted to safety by aid workers at the airport in Beira on March 19. Hide Caption 29 of 35 Photos: In photos: Cyclone Idai's impact A man closes improvised caskets at the morgue in Chimanimani on Monday, March 18. Hide Caption 30 of 35 Photos: In photos: Cyclone Idai's impact Timber company workers stand on a damaged road on March 18 in Chimanimani. Hide Caption 31 of 35 Photos: In photos: Cyclone Idai's impact Family members react to a child with broken limbs at the Chimanimani rural district hospital on March 18. Hide Caption 32 of 35 Photos: In photos: Cyclone Idai's impact Damage is seen on March 18 at the airport in Beira in the aftermath of the passage of Cyclone Idai. Hide Caption 33 of 35 Photos: In photos: Cyclone Idai's impact An aerial view of Praia Nova Village on Sunday, March 17. The village was one of the most affected neighborhoods in the coastal city of Beira. Hide Caption 34 of 35 Photos: In photos: Cyclone Idai's impact People carry their personal effects in the aftermath of Cyclone Idai in Beira on Friday, March 15. Hide Caption 35 of 35

"The results are a stark example of the inequalities that come with global warming," wrote the study's lead author Andrew King, a climate researcher at the ARC Centre of Excellence for Climate Extremes and the University of Melbourne, Australia.

That is not to say that developed countries are immune to its effects.

Hurricane Harvey, a storm whose intensity was linked to climate change, caused biblical flooding in the summer of 2017 around Houston and surrounding counties. More than 120,000 people had to be evacuated or rescued, and about 80 people died.

And preliminary analysis by researchers at the Environmental Change Institute (ECI) at the School of Geography and Environment in Oxford University, found that Europe's uncharacteristically hot and dry summer of 2018 was likely linked to climate change.

Parts of Houston were flooded during Hurricane Harvey.

"Wealthy countries like the United States [are] able to prepare and cope with problems like climate change better than poorer countries," Michael Oppenheimer, Princeton Professor of GeoScience and International Affairs, told CNN's Christiane Amanpour.

"But in some places poorer countries have actually done a better job than the United States. Because for all our worth -- or our wealth, we've been asleep at the wheel and that's due to bad leadership in the federal government," Oppenheimer said.

Infrastructure wrecked

Countries like Mozambique and Bangladesh, whose low-lying, densely populated coastal towns and cities are on the front lines of climate change, have agonized over the issue of a warming planet.

"It is quite clear that rising sea levels and warming seas contributes to the intensification of these weather events," McClean told CNN.

Bangladesh, which saw at least 1,200 die and more than 41 million people affected by monsoon rains and flooding in 2017 , is girding for a battle against climate change, Ricardo Safra de Campos, a Research Fellow at the College of Life and Environmental Sciences at the University of Exeter, told CNN.

Catastrophic flooding in Bangladesh in 2017 destroyed at least 950,000 houses.

The country has built anti-cyclone shelters, coastal embankments, and invested in a cyclone and flood warning prediction systems. However, its efforts are financially limited, adds Safra de Campos.

Beira, which lies below sea level, is no stranger to floods. Officials worried about the low lying city, which is filled with poorly planned settlements. It had flood defenses in place before Cyclone Idai hit.

According to the World Bank , funds were provided in 2012 t o help the city build flood control stations, a large water retention basin, and the restoration of a storm drainage system and canals .

But the cyclone's 175 kph (110 mph) winds and and accompanying rains laid waste to Beira's defenses -- ripping the foundations of bridges, bursting riverbanks and sweeping away homes.

Stronger storms

"High rates of poverty, a lack of resilient infrastructure, slums and a disappearance of protected infrastructure in low- and middle-income countries" create a cocktail of risk, said the UN's McClean.

But cities, towns and villages may not stand a chance to withstand the scale and intensity of extreme weather events, which have "more or less doubled in the last 40 years," he said.

When Super Typhoon Haiyan, which turned into a Category 5 hurricane from the warming waters in the ocean, struck the Philippines in 2013 it became one of the strongest tropical storms in history.

Filipinos had never seen anything like it, McClean said. The people in the coastal city of Tacloban could not even describe the seven-meter tidal surge that came with the storm.

Aid groups believe the death toll in Mozambique will be far higher than the official figure.

"They simply did not have words to explain what was happening to them," he said.

While it is too early to gauge the magnitude of Cyclone Idai, the UN World Meteorological Organization projects the disaster could be among the worst weather-related disasters in the southern hemisphere.

The UN's Economic Commission for Africa estimates that Mozambique, Zimbabwe, and Malawi, may have lost $1 billion of infrastructure in the cyclone.

"They lost everything, including the references of their past and cultural heritage," Machel added. "Everything is washed away....[but] the social fabric is the one which will be extremely difficult to reconstruct," even when the roads are re-paved, she said.

As events in Mozambique, Bangladesh and the Philippines have shown, climate change is a problem of the present. Not just the future.