After soil, water and food, microplastics have now entered the atmosphere, where they influence the climate system and may even change atmospheric chemistry.
A great ambience requires cooperation and planning according to new research.
The eruption of Krakatoa in 1883 sent volcanic dust and gases circling the Earth, creating spectacular sunsets captured by artists.
William Ashcroft via Houghton Library/Harvard University
Climate change is likely to mean disasters such as Cyclone Seroja will become more intense, and be seen further south in Australia more often.
The sky can be so many different things: it can be big, beautiful and blue, or grey, cloudy and rainy. It can also be full of stars, or full of orange and red clouds at sunset or sunrise.
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The Earth should be safe (and habitable) for a few billions of years, but we still need to worry about the impact now of just a few degrees of global warming.
Solar geoengineering could mean taking steps to alter the formation of clouds.
Matt Dutcher/Getty Images
The Atlantic Ocean is still growing physically, but humans are over-harvesting its rich fisheries. The most famous one – North Atlantic cod – has become a textbook example of harmful overfishing.
It’s not only nuclear bomb tests that disrupt the atmosphere, there are a number of natural events that can do the same. But how long does any damage last?