The Earth's
equator
does not line up with the
plane of the Earth's orbit
, so for half of the year the
Northern Hemisphere
is tilted more towards the
Sun
and for the other half the Northern Hemisphere is tilted more away, causing seasonal temperature variation.
A satellite image of a section of the
Great Wall of China
, running diagonally from lower left to upper right (not to be confused with the much more prominent river running from upper left to lower right).
The color of a red cape does not enrage a bull.
The dodo was intelligent and inedible despite popular belief
Cooling towers from a nuclear power plant. The white clouds are harmless water vapor from the cooling process.
Death rates from air pollution and accidents related to energy production, measured in deaths per terawatt hours (TWh) (left). Carbon emissions measured in tons per gigawatt hour (GWh) (right).