PER

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Articles about PER

374 published items.

12 of the world's rarest gemstones
Discover science

12 of the world's rarest gemstones

When it comes to gemstones, many people believe that diamonds are the rarest in the world. But in reality, there are some types of stones that are even more valuable and…

March 1, 2026
World's first green ammonia plant opens
Scientific works

World's first green ammonia plant opens

The new plant will produce 5,000 tonnes of green ammonia per year, replacing grey ammonia which uses environmentally harmful fossil fuels.

October 1, 2024
Solar reactor turns water into hydrogen
Scientific works

Solar reactor turns water into hydrogen

In testing, the new reactor produced about 500 grams of hydrogen per day, meeting about half the electricity needs of a four-person household.

October 1, 2024
Map of human ingestion of microplastics
Health

Map of human ingestion of microplastics

Results of a study recently published in the journal Environmental Science & Technology show that scientists have mapped the level of human absorption of microplastics i…

May 31, 2024