How Do Birds Find Their Way During Migration?
Migrating birds do not carry a single “GPS”. The Cornell Lab of Ornithology and USGS describe a set of cues that complete one another: Sun, stars, mag...
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Environment
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EPA Eliminates Federal Greenhouse Gas Limits for Power Plants
The US Environmental Protection Agency has announced the repeal of federal rules that limited greenhouse-gas emissions from coal- and gas-fired power...
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How Does a Lightning Rod Protect a Building?
A lightning rod does not repel a strike and does not “lure” lightning like bait. It is an interception point: if a discharge reaches the building, the...
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156 years since the Old Faithful geyser received its name
18 September 2026 marks 156 years since members of the Washburn–Langford–Doane expedition named Old Faithful, the geyser in what is now Yellowstone Na...
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Why Is the Ocean Salty?
River water usually tastes almost neutral; seawater is salty. Not because rivers carry no salts, but because they carry little, and the oceans collect...
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Why Do Cats Purr—and Why It Does Not Always Mean Happiness
The sofa purr is often, correctly, read as contentment. Cats also purr when frightened, hurt, ill or asking for food. The sound is a flexible channel,...
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Why Does Rain Have a Smell? The Science Behind the Scent of Wet Earth
The earthy smell after a summer shower seems to come from the water itself. The drop, however, has almost no aroma. What we recognise is a mixture of...
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Latin America accounted for 85% of environmental-defender killings in 2025
At least 124 people defending land, forests, water and communities were killed in 2025, according to Global Witness’s annual report. Of the documented...
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Climate change made deadly Nepal glacier collapse more likely, analysis finds
Human-caused climate change probably contributed to the conditions behind the ice and rock collapse on 26 August 2026 from the Langtang Lirung slope,...
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98 years since the Okeechobee hurricane, one of the deadliest disasters in US history
17 September 2026 marks 98 years since the Florida disaster linked to the 1928 Okeechobee hurricane. National Weather Service Miami records that the s...
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World Cleanup Day 2026 mobilises communities worldwide against waste
World Cleanup Day is observed on 20 September, a date proclaimed by the United Nations General Assembly in resolution 78/122 of 8 December 2023. The...
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International Coastal Cleanup mobilises volunteers against waste entering waterways
On Saturday, 19 September 2026, communities in more than 100 countries are expected to join the International Coastal Cleanup, the annual effort coord...
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