Light pollution is disrupting the seasonal rhythms of plants and trees, lengthening pollen season in US cities

City lights that blaze all night are profoundly disrupting urban plants’ phenology – shifting when their buds open in the spring and when their leaves change colors and drop in the fall. New research shows how nighttime lights are lengthening the growing season in cities, which can affect everything from allergies to local economies.

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Inside global water-conflict hotspots

formed, offering people fresh drinking and irrigation water; however, due to their high value and scarcity, they have also been sources of contention, creating competition among communities and countries. Today, as climate change threatens the global supply of water, these conflicts are more pronounced in certain areas, escalating in disunity and violence.

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