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Official and ministers either deny that Palestinians are being affected by hunger or say it is not Israel’s fault

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Israel is pursuing an extensive PR effort to remove itself from blame for the starvation and killing of Palestinian civilians in Gaza in the face of overwhelming evidence that it is responsible.

As dozens of governments, UN organisations and other international figures have detailed Israel’s culpability, officials and ministers in Israel have attempted to suggest that there is no hunger in Gaza, that if hunger exists it is not Israel’s fault, or to blame Hamas or the UN and aid organisations for problems with distribution of aid.

High cost of staples due to extreme weather could lead to more malnutrition, political upheaval and social unrest

Climate change-induced food price shocks are on the rise and could lead to more malnutrition, political upheaval and social unrest as the world’s poorest are hit by shortages of food staples.

New research links last year’s surges in the price of potatoes in the UK, cabbages in South Korea, onions in India, and cocoa in Ghana to weather extremes that “exceeded all historical precedent prior to 2020”.

Curbing waste, eating a plant-rich diet and limiting ultra-processed food (and sadly, coffee and chocolate) will dramatically reduce your carbon footprint

• Change by degrees offers life hacks and sustainable living tips each Saturday to help reduce your household’s carbon footprint

• Got a question or tip for reducing household emissions? Email us at changebydegrees@theguardian.com

Food production globally accounts for nearly 30% of greenhouse gas emissions, with the average Australian diet contributing more than 3kg of Co2 per person per day. And what’s worse, we waste about 35% of the food we bring home. If we keep this up, it has been estimated the already unsustainable environmental cost of the food system will nearly double by 2050.

Calculating the precise impact your individual food choices have on the environment isn’t simple, but research suggests the actions we can take to bring that impact down are – and they aren’t just better for the environment, they’re better for our health too.

In Chile’s drought-stricken Atacama desert, Indigenous people say desalination plants cannot counter the impact of intensive lithium and copper mining on local water sources

• Photographs by Luis Bustamante

Vast pipelines cross the endless dunes of northern Chile, pumping seawater up to an altitude of more than 3,000 metres in the Andes mountains to the Escondida mine, the world’s largest copper producer. The mine’s owners say sourcing water directly from the sea, instead of relying on local reservoirs, could help preserve regional water resources. Yet, this is not the perception of Sergio Cubillos, leader of the Indigenous community Lickanantay de Peine.

Cubillos and his fellow activists believe that the mining industry is helping to degrade the region’s meagre water resources, as Chile continues to be ravaged by a mega-drought that has plagued the country for 15 years. They also fear that the use of desalinated seawater cannot make up for the devastation of the northern Atacama region’s sensitive water ecosystem and local livelihoods.

War has intensified poverty and hunger as aid is cut, with many families living in makeshift camps barely surviving

The pain of going to bed hungry is becoming familiar for Jamila Rabea. It’s hard to sleep. The meagre rations of bread, tomato paste and tea she spends much of her day trying to gather, she gives to her children. Five of them live with her in a shelter built from tarpaulin, cloth and scraps of wood.

Like many of the refugee families living here in a makeshift camp to the east of the Yemen port city of Al-Mukalla, she has had to leave home because of the bombs and fighting.

Water shortages hitting crops, energy and health as crisis gathers pace amid climate breakdown

Drought is pushing tens of millions of people to the edge of starvation around the world, in a foretaste of a global crisis that is rapidly deepening with climate breakdown.

More than 90 million people in eastern and southern Africa are facing extreme hunger after record-breaking drought across many areas, ensuing widespread crop failures and the death of livestock. In Somalia, a quarter of the population is now edging towards starvation, and at least a million people have been displaced.

In first assessment since pandemic in 2020, World Bank urges other countries to step up support

Extreme poverty is accelerating in 39 countries affected by war and conflict, leaving more than a billion people to go hungry, according to the World Bank.

Civil wars and confrontations between nations, mostly in Africa, have set back economic growth and reduced the incomes of more than a billion people, “driving up extreme poverty faster than anywhere else”, the Washington-based body said.

Biotech companies say genetically modified plants give higher yields and reduce pesticide use. But in rural communities, questions are growing over who really benefits – and the threat to native varieties

On a hillside farm in San Lorenzo, in the mountains of Colombia’s southern Nariño department, Aura Alina Domínguez presses maize seeds into the damp soil. Around her, farmers Alberto Gómez, José Castillo and Javier Castillo arrive with their selected seeds, stored in shigras – hand-woven shoulder bags – as has been done for generations.

In San Lorenzo, they call themselves “seed guardians” for their role in protecting this living heritage and passing it down the generations. “Each seed carries our grandparents’ story,” says Domínguez, arranging the dried cobs that hang from her rafters.

UN rapporteur calls for move as food deliveries are attacked and starvation becomes a weapon of war in Gaza and Sudan

UN peacekeepers should be routinely deployed to protect aid convoys from attack in places such as Gaza and Sudan, a senior United Nations expert has proposed.

With starvation increasingly used as a weapon of war, Michael Fakhri said armed UN troops were now required to ensure that food reached vulnerable populations.

Communities in the Salaquí basin face deepening food insecurity, armed conflict and the collapse of a way of life – while government schemes ignore the real problem

• Photographs by Antonio Cascio

Riosucio was established between rivers and swamps. For most of the year, the people of this Colombian municipality live above water and have developed ways to manage the fluctuating river levels. A network of makeshift wooden boards connects the houses in the town, allowing people to move between them.

Despite the resilience of these communities, their increasingly harsh environment is beginning to overcome all the methods and systems designed to tame it, causing crop destruction, hunger and deepening poverty.

Former army and navy leaders urge government to think beyond military capability in advance of key defence review

Former military leaders are urging the UK government to widen its definition of national security to include climate, food and energy measures in advance of a planned multibillion-pound boost in defence spending.

Earlier this year Keir Starmer announced the biggest increase in defence spending in the UK since the end of the cold war, with the budget rising to 2.5% of GDP by 2027 – three years earlier than planned – and an ambition to reach 3%.

Former development ministers Valerie Amos, Lynne Featherstone and Liz Sugg call on leaders to commit to ensuring that women and children have access to good nutrition

Malnutrition and hunger are soaring across the world, leading to hundreds of millions of people suffering and posing a major threat to global security. Access to good nutrition is foundational to development. Without it, children cannot reach their full potential, physically or cognitively. As a result, economies are undermined and less productive, poverty is entrenched and instability spreads.

Women and girls are disproportionately impacted. One billion adolescent girls and women worldwide are suffering from malnutrition because they typically eat last and least. This has a generational impact as malnutrition passes from mother to child. Improving maternal nutrition is critical to arresting global malnutrition and building a healthier and more secure world.

Cocoa one of six commodities vulnerable to environmental threats in ‘extremely worrying picture’ for food resilience

Climate breakdown and wildlife loss are deepening the EU’s “chocolate crisis”, a report has argued, with cocoa one of six key commodities to come mostly from countries vulnerable to environmental threats.

More than two-thirds of the cocoa, coffee, soy, rice, wheat and maize brought into the EU in 2023 came from countries that are not well-prepared for climate change, according to the UK consultants Foresight Transitions.

The global food system has been captured by a few rapacious companies that profit from public ill-health. We need a radical overhaul

Our food system is killing us. Designed in a different century for a different purpose – to mass produce cheap calories to prevent famine – it is now a source of jeopardy, destroying more than it creates. A quarter of all adult deaths globally – more than 12 million every year – are due to poor diets.

Malnutrition in all its forms – undernutrition, micronutrient deficiencies, overweight and obesity – is by far the biggest cause of ill-health, affecting one in three people on the planet. Ultra-processed foods are implicated in as many as one in seven premature deaths in some countries.

Despite attempts to build resilience by improving infrastructure and first response, extreme weather events and US aid cuts have left many feeling vulnerable

When the monsoon rains came last September, they swept away most of the village of Panauti, in the foothills of the Nepali Himalayas. The Roshi River overflowed after the unprecedented rainfall, triggering landslides and destroying most of the roads and bridges.

Peering through the thick blanket of relentless rain “felt like waiting for morning to arrive so we could see the world again”, says Bishnu Humagain. “We lost everything – our home, our agriculture, and all of our belongings.”