Pia Östensson, a biologist and pollen expert at Stockholm's Natural History museum, explains why there is so much aspen fluff this year and why it is not related to recent wildfires.
Hospital staff in protective gear are suffering as central Sweden experiences a heatwave.
Looking at a map of Arctic Canada, it seems there are literally thousands of lakes and rivers, yet many Arctic communities are facing water shortages or threats of shortages to come. Iqaluit, capital of Nunavut Territory, will be facing that problem in the very near future.
Andrew Medeiros (PhD)
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