Uncategorized
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A dirty and growing problem: Too few toilets
As the famous book says, everybody poops. That’s 7.8 billion people, worldwide. For the 2.4 billion with no toilet, the process can be complicated.
- Physics
The exotic ‘atom’ positronium surprises scientists
New measurements of a weird but simple atom, one without a nucleus, suggest it may have unexpected properties. Scientists find this troubling.
- Animals
Whale blowholes don’t keep out seawater
Whales’ blowholes aren’t as protective as scientists had thought. They not only can let in water but also pollutants.
- Chemistry
New solution for carbon dioxide: Turn it into ‘green’ fuel
Chemists have created a new way to convert carbon dioxide into ethanol. It might one day help remove excess CO2 — a greenhouse gas — from the air.
- Life
Scientists Say: Amphibian
Amphibians are ectotherms that live dual lives — they start off in water, breathing with gills, and end up breathing air with lungs.
- Life
If bacteria stick together, they can survive for years in space
Tiny clumps of bacteria can survive at least three years in outer space. This raises the prospect of interplanetary travel by microbial life.
- Ecosystems
Soggy coastal soils? Here’s why ecologists love them
Coastal wetlands can protect our shores from erosion, flooding and rising sea levels.
- Chemistry
Build ice towers with bottled water and ice
Pour out liquid water into a solid ice tower. We outline the conditions you’ll need to turn this demonstration into a super-cool experiment.
- Plants
‘Vampire’ parasite challenges the definition of a plant
Langsdorffia are stripped down to their essentials. Lacking green leaves for photosynthesis, they steal energy and nutrients from other plants.
- Chemistry
Stinky success: Scientists identify the chemistry of B.O.
They turned up the enzyme in bacteria behind that underarm stench. Understanding how it works could pave the way to new types of deodorant.
- Archaeology
Let’s learn about ancient technology
Ancient people didn’t have the internet. Instead, they performed surgeries, made weapons and built monuments with wood, stones, rope and fire.
- Chemistry
Scientists say: Chemical
A chemical is anything made of two or more atoms bonded together in a fixed structure. Chemicals make up the world around us.
