Guardian: The oil giant ExxonMobil has admitted that its support for lobby groups that question the science of climate change may have hindered action to tackle global warming. In its corporate citizenship report, released last week, ExxonMobil says it intends to cut funds to several groups that “divert attention” from the need to find new sources of clean energy. The move comes ahead of the firm’s annual meeting today in Dallas, at which prominent shareholders including the …