Scientists have found a temporary “chemical equator” that separates the heavily polluted air of the Northern Hemisphere from the cleaner air of the Southern Hemisphere over the Western Pacific — only it isn’t where they expected to find it.
The Northern Hemisphere tends to have more polluted air than the Southern Hemisphere because it has more [...]

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Every September 22, people from around the world get together in the streets, intersections, and neighbourhood blocks to remind the world that we don’t have to accept our car-dominated society.
But we do not want just one day of celebration and then a return to “normal” life. When people get out of their cars, they should [...]

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