A reasonably concise synopsis in layman's terms
"The first point to establish is that humans are the cause of the rise in atmospheric CO2 levels. This fact is common sense. The amount of CO2 in the atmosphere is going up by around 15 billion tonnes per year. Humans are emitting around twice that much!"
"As far back as the mid 1800s, Tyndall predicted that greenhouse warming should cause nights to warm faster than days
. This is because at night, the Earth's surface cools by radiating heat out to space. Greenhouse gases trap some of this heat, slowing the night-time cooling."
"If the sun was causing global warming, it would cause
summers to warm faster than winter, days to warm faster than nights
and the upper atmosphere to warm."
And how that ominously applies to the current heatwave
"But while the current heat wave has recorded 12 all-time daily highs so far this month, it also has registered 98 all-time overnight highs
, the National Oceanic and Atmospheric Administration reported at a briefing Thursday."