The London School of Hygiene and Tropical Medicine has sold off investments in coal companies from its £16m endowment in a bid to rid itself of ties to firms that contribute most significantly to climate change. Campaigners say it is the first health research organization in the world to do so. In March, the Guardian launched a campaign calling on the world’s largest health funders – the Gates Foundation and Wellcome Trust – to divest from fossil fuels. The Wellcome Trust, which has an endowment of more than £18bn Bill and Melinda Gates Foundation have more than $1.4bn (£1bn) invested in fossil fuel companies in 2013.