➔ 
Résultats pour:
resalim
Simultaneous harvest failures across major crop-producing regions are a threat to global food security. Concurrent weather extremes driven by a strongly meandering jet stream could trigger such events, but so far this has not been quantified. Specifically, the ability of state-of-the art crop and climate models to adequately reproduce such high impact events is a crucial component for estimating risks to global food security. Here we find an increased likelihood of concurrent low yields during summers featuring meandering jets in observations and models. While climate models accurately simulate atmospheric patterns, associated surface weather anomalies and negative effects on crop responses are mostly underestimated in bias-adjusted simulations. Given the identified model biases, future assessments of regional and concurrent crop losses from meandering jet states remain highly uncertain. Our results suggest that model-blind spots for such high-impact but deeply-uncertain hazards have to be anticipated and acc
..on a higher-resolution illustration of World3’s ‘runaway global warming’ scenario (∼8–12 °C+). Our simulation indicates rapid decline in food production and unequal distribution of ∼6 billion deaths due to starvation by 2100. ..
the biophysical limits of food production are being reached. Second, current food production systems are actively destroying the very resource base upon which they rely. Third, the majority of food production and all its storage and distribution is critically dependent upon fossil fuels, not only making the food supply vulnerable to price and supply instability, but also presenting an impossible choice between food security and reducing greenhouse gas emissions. Fourth, climate change is already negatively impacting the food supply and will do so with increasing intensity as the Earth continues to warm and weather destabilises. Fifth, the trajectory of increasing food demand that cannot easily be reversed. Sixth, the prioritisation of economic efficiency and profit in world trade has undermined food sovereignty and the resilience of food production at multiple scales, making both production and distribution highly vulnerable to disruptive shocks. Considered individually, each one of the hard trends presents a
The excessive use of phosphorus is depleting reserves vital to global food production, while also adding to the climate crisis
In Europe, a large-scale war could cause the Baltic Sea to freeze over and severely compromise food security – potentially for decades and even centuries to come. An ever-growing body of work has shown that even a local nuclear conflict could usher in a climate catastrophe. As marine scientists, we have considered what this could specifically mean for the world’s oceans. In 1982, a group of scientists including Carl Sagan began to raise the alarm on a climate apocalypse that could follow nuclear war. Using simple computer simulations and historic volcanic eruptions as natural analogues, they showed how smoke that lofted into the stratosphere from urban firestorms could block out the sun for years.
There is a big shortfall between the amount of food we produce today and the amount needed to feed everyone in 2050. There will be nearly 10 billion people on Earth by 2050—about 3 billion more mouths to feed than there were in 2010. As incomes rise, people will increasingly consume more resource-intensive, animal-based foods. At the same time, we urgently need to cut greenhouse gas (GHG) emissions from agricultural production and stop conversion of remaining forests to agricultural land.
As China's record heatwave starts to subside, farmers are assessing the damage caused by a prolonged drought and the government is urging them to replant or switch crops where they can.
The National Drought Group of the UK predicts that yields of some vegetable crops—carrots, onion, and potatoes—could be cut in half. The European Drought Observatory says that almost half of the bloc is drier than it has been since the Renaissance. China’s agricultural ministry has urged farmers to undertake emergency switches to different crops following a historic heatwave.
At his remote woodland home, Ben Green is trying to stay positive about a collapse of the food supply
Well, cacao plants seem to be increasingly victims of fungal disease and climate change. Climate change may increase coastal flooding, worsen wildfires and hurricanes, foster the spread of insect-borne diseases, destroy coral reefs, threaten hundreds of animal species, and erode our current way of life, but jeopardize chocolate? .....
Climate change has been relatively kind to banana suppliers so far – but in the decades to come, friend may turn to foe. Temperatures are likely to get so hot that the annual production gains enjoyed by banana suppliers will begin to drop. And in some places, total banana yields will begin to decline.
there is growing consensus among experts that climate change will severely affect coffee crops over the next 80 years. By 2100, more than 50 per cent of the land used to grow coffee will no longer be arable.
To prevent crop damage, over the last 30 years farmers have increased the altitude at which they plant potatoes by more than 1,000 metres, said Mamani. The curator of the CIP germplasm bank, Rene Gómez, predicts that at this rate of prolonged drought and high temperatures for much of the year, followed by severe frost and plunging temperatures that freeze up the fields, potatoes are “absolutely at risk” in Peru’s highlands. “I estimate that in 40 years there will be nowhere left to plant potatoes [in Peru’s highlands],” ...
For the past few years, scientists have been frantically sounding an alarm that governments refuse to hear: the global food system is beginning to look like the global financial system in the run-up to 2008.
The Bank of England governor warned last week of ‘apocalyptic’ food price rises. Yet war in Ukraine, climate change and inflation are already taking their toll all over the world. Apocalypse is an alarming idea, commonly taken to denote catastrophic destruction foreshadowing the end of the world. But in the original Greek, apokálypsis means a revelation or an uncovering. One vernacular definition is “to take the lid off something”.
A new analysis of flash droughts finds that droughts coming on suddenly seem to be striking faster in the last two decades, with approximately 33–46 percent of flash droughts now emerging within just five days.
Programme to tackle pollution crisis caused by an overload of manure faces fierce opposition from farmers
Intensive agriculture’s insatiable thirst for water is turning wetland to wasteland, draining rivers and polluting groundwater
The case for cutting meat consumption is so compelling that you would think politicians would be less shy about making it. Yet while campaigners warn with increasing urgency that global livestock production is accelerating climate breakdown and causing devastating damage to nature and human health, governments remain reluctant to tackle meat-eating.
Politician says droughts and climate-induced famine in the country are a result of the behaviours of rich nations
Fried crickets on the school menu, milk made from fly larvae and mealworm bolognese for dinner? These are the environmentally friendly meals we can look forward to. Bon appetit!
There is hardly any other food that pollutes our environment and the climate as badly as meat. However, no government in the world currently has a concept of how meat consumption and production can be significantly reduced. But if the sector continues to grow as it has up to now, almost 360 million tons of meat will be produced and consumed worldwide in 2030. With ecological effects that are hard to imagine.
Global food prices shot up nearly 33% in September 2021 compared with the same period the year before. That’s according to the UN Food and Agriculture Organisation (FAO)‘s monthly Food Price Index, which also found that global prices have risen by more than 3% since July, reaching levels not seen since 2011.
Growing global meat consumption threatens to derail the Paris Agreement, but that hasn’t stopped the meat industry insisting it is part of the solution to climate change.
Twenty livestock companies are responsible for more greenhouse gas emissions than either Germany, Britain or France – and are receiving billions of dollars in financial backing to do so, according to a new report by environmental campaigners. Raising livestock contributes significantly to carbon emissions, with animal agriculture accounting for 14.5% of the world’s greenhouse gas emissions.
Generating three centimeters of top soil takes 1,000 years, and if current rates of degradation continue all of the world's top soil could be gone within 60 years, a senior UN official said
Everyone from small farms to McDonald’s is getting involved in regenerative agriculture. Could it point the way to a better future for farming?
Phosphorus is an essential nutrient for all forms of life. It is a key element in our DNA and all living organisms require daily phosphorus intake to produce energy. It cannot be replaced and there is no synthetic substitute: without phosphorus, there is no life.Reserves are limited and not equally spread over the planet.
