Secret funding helped build vast network of climate denial thinktanks

Anonymous billionaires donated $120m to more than 100 anti-climate groups working to discredit climate change science

Suzanne Goldenberg, US environment correspondent

Conservative billionaires used a secretive funding route to channel nearly $120m (£77m) to more than 100 groups casting doubt about the science behind climate change, the Guardian has learned.

The funds, doled out between 2002 and 2010, helped build a vast network of thinktanks and activist groups working to a single purpose: to redefine climate change from neutral scientific fact to a highly polarising "wedge issue" for hardcore conservatives.

The millions were routed through two trusts, Donors Trust and the Donors Capital Fund, operating out of a generic town house in the northern Virginia suburbs of Washington DC. Donors Capital caters to those making donations of $1m or more.