Hunger, drought, disease: UN climate report reveals dire health threats – “The basis for our health is sustained by three pillars: the food we eat, access to water, and shelter. These pillars are totally vulnerable and about to collapse.”
By Patrick Galey
23 June 2021
(AFP) – Hunger, drought and disease will afflict tens of millions more people within decades, according to a draft UN assessment that lays bare the dire human health consequences of a warming planet.
After a pandemic year that saw the world turned on its head, a forthcoming report by the Intergovernmental Panel on Climate Change (IPCC), seen exclusively by AFP, offers a distressing vision of the decades to come: malnutrition, water insecurity, pestilence.
Policy choices made now, like promoting plant-based diets, can limit these health consequences—but many are simply unavoidable in the short term, the report says.
It warns of the cascading impacts that simultaneous crop failures, falling nutritional value of basic foods, and soaring inflation are likely to have on the world’s most vulnerable people.
Depending on how well humans get a handle on carbon emissions and rising temperatures, a child born today could be confronted with multiple climate-related health threats before turning 30, the report shows.
The IPCC’s 4,000-page draft report, scheduled for release next year, offers the most comprehensive rundown to date of the impacts of climate change on our planet and our species.
It predicts that up to 80 million more people than today will be at risk of hunger by 2050.
It projects disruptions to the water cycle that will see rain-fed staple crops decline across sub-Saharan Africa. Up to 40 percent of rice-producing regions in India could become less suitable for farming the grain.
Global maize production has already declined four percent since 1981 due to climate change, and human-induced warming in West Africa has reduced millet and sorghum yields by up to 20 and 15 percent respectively, it shows.
The frequency of sudden food production losses has already increased steadily over the past 50 years.
“The basis for our health is sustained by three pillars: the food we eat, access to water, and shelter,” Maria Neira, director of Public Health, Environmental and Social Determinants of Health at the World Health Organization, told AFP.
“These pillars are totally vulnerable and about to collapse.” [more]
Hunger, drought, disease: UN climate report reveals dire health threats
UN draft climate report: Impacts on nature
23 June 2021 (AFP) – Climate change threats to life on Earth are systemic, interconnected and on a scale unprecedented in human history, the UN’s climate science advisors have warned in a draft report seen exclusively by AFP.
Here are some of the report’s findings on impacts on nature:
Natural systems
The report warns that after previous drastic climate shocks like the one currently facing the planet, the recovery of ecosystems, food webs and biodiversity took millions of years and involved the emergence of entirely new species.
- Many land, freshwater, ocean and coastal ecosystems are already “near or beyond” limits to their ability to adapt to climate change
- At two degrees Celsius—the Paris climate deal aims for “well below” this—around 15 percent of the planet’s permafrost could be lost by 2100. This would release between 36 and 67 billion tonnes of carbon from the frozen soil—a vicious-circle “feedback loop” that would cause more warming
- Extreme events combined with longer-term climate trends are pushing ecosystems towards tipping points “beyond which abrupt, and possibly irreversible, changes may occur”
Species
The outlook for the world’s living creatures is looking perilous, the report makes clear.
- Extinction rates are accelerating dramatically and are estimated to be a thousand times higher than before the impact of human activities on the Earth last century
- Faced with rising temperatures, many plants and animals will shift hundreds of kilometres from their natural habitats by the end of the century
- Up to 54 percent of land and sea species are threatened with extinction this century if Earth warms two degrees Celsius to three degrees above preindustrial levels. High mountain and island species are particularly at risk
- Even in a plus-two-degree world, polar animals like penguins, seals, polar bears, along with warm-water coral reefs and mangroves, will be under severe threat
Forests
A dangerous mix of higher temperatures, dry conditions and drought means that wildfire seasons across the planet are longer and potentially burnable areas have doubled in size.
- High emissions could mean drought and wildfire transform half the Amazon rainforest to grassland, a tipping point that would release carbon
- In the Arctic tundra and boreal forest, the area burned by wildfires increased nine-fold across Siberia from 1996 to 2015
- Restoring forests can store carbon and help reduce human vulnerability to climate change. But planting trees in places outside of natural forests—like in grasslands and savannahs—can hurt biodiversity and increase climate risks
Oceans
The last time oceans saw the levels of acidification and depleted oxygen projected for 2100 under a high emissions scenario was some 56 million years ago.
- Marine heatwaves—which can damage and kill coral, kelp forests, seagrass meadows, and invertebrates—became 34 percent more frequent and 17 percent longer between 1925 and 2016
- 70 to 90 percent of the world’s coral reefs are projected to decline with just 1.5 degrees Celsius of global warming. Beyond that, they will suffer “more extensive losses”
