内容摘要：It is also estimated to save 3,400 tonnes of carbon over the next 20 years.

It is also estimated to save 3,400 tonnes of carbon over the next 20 years.

The UN has said the blockade has caused severe shortages of food, medicines and fuel, and an assessment on Monday warned that Gaza's population of around 2.1 million people.

The US confirmed last week that it was preparing a new system for providing aid from a series of hubs inside Gaza, which would be run by private companies and protected by security contractors and Israeli forces.Images analysed by BBC Verify show that land has already been cleared, with new roads and staging areas constructed at a number of locations in southern and central Gaza in recent weeks.Israel has not publicly said where the hubs will be, but humanitarian sources - briefed previously by Israeli officials - told BBC Verify that at least four centres will be built in the southern section of Gaza and one further north near the Netzarim Corridor, a strip of land controlled by the military that effectively divides the territory.

The Gaza Humanitarian Foundation - an organisation set up to support the plan - initially said food, water and hygiene kits would be supplied to 1.2 million people, less than 60% of the population.On Wednesday it announced it would start operations before the end of May, and appeared to call for Israel to allow aid through normal channels until its distribution centres were fully operational. It also called for aid hubs to be built in northern Gaza, something not envisaged under the original plan and which had led to criticism that people would be forced to move south.

UN agencies have insisted they will not co-operate with the plan - which is in line with one previously approved by Israel's government - saying it contradicted fundamental humanitarian principles.

A spokesperson for the UN's Office for the Co-ordination of Humanitarian Affairs (OCHA) accused Israel of seeking to use "food and fuel as leverage, as part of a military strategy"."But to have it done that quick, it could have saved her that extra brain surgery."

Nancy is now in remission and has become, a charity that supported the family during her treatment.

Charles Trigg, who lives near Market Harborough in Leicestershire, was diagnosed with a stage four aggressive glioblastoma tumour in April.He was told his tumour was the size of a golf ball.