Complex sentence: In the emails, one climate researcher dismisses him as a "bozo", and others speculate over his funding, and argue about whether to ignore or counterattack him--although, according to Cosh, some unnamed scientists acknowledge that his criticisms have merit.
Split into simpler sentences: In the emails, one climate researcher dismisses him as a "bozo". Others speculate over his funding, and argue about whether to ignore or counterattack him--although, according to Cosh, some unnamed scientists acknowledge that his criticisms have merit.