The oil companies have been denying the effects of burning fossil fuels for 70 years - even though they knew the truth!
Big oil firms knew of dire effects of fossil fuels as early as 1950s, memos show:
#ClimateDiary
the Guardian
Big oil firms knew of dire effects of fossil fuels as early as 1950s, memos show
Newly unearthed documents contain warning from head of Air Pollution Foundation, founded in 1953 by oil interests