A reader recently wrote to ask us about our November 17 article: “Satellite Detects Human Contribution to Atmospheric CO2.” “Hello, I read on the site that CO 2 concentrations are higher in some areas ...

George Farmer takes a look at how to measure the levels of CO2 in the planted aquarium to ensure it benefits the plants, while remaining safe for your fish. Carbon dioxide (CO2) injection in planted ...

We’re shopping Black Friday and Cyber Monday sales, and we spotted our recommendation for an all-purpose glue gun at its lowest price this year. If you complete as many crafts as household ...

This is the lowest-priced, factory-new firearm you can buy in the modern gun world! This bolt-action operated solid ... It comes with a real shock wave absorber recoil pad and 33-millimeter pneumatic ...

With an improved catalyst, ORNL chemists converted two greenhouse gases, methane (CH4) and carbon dioxide (CO2), to syngas, a valuable mix of hydrogen (H2) and carbon monoxide. Philip Gray/ORNL ...

Researchers in Arizona say they have unearthed the oldest gun ever found in the continental United States. The bronze cannon, or wall gun, is associated with the first European expedition of the ...

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The 485-year-old cannon discovered in southern Arizona. Image: International Journal of Historical Archaeology (2024) Talk about a blast from the past: A team of researchers in Arizona discovered ...

The wall gun was resting on the floor of a Spanish structure. This figure shows it while under excavation, held firmly in place by roots. Credit: International Journal of Historical Archeology ...

Two legendary rock bands are planning tour stops in Finland next summer. The American hard rock group Guns N' Roses are scheduled to perform in Tampere on 7 July 2025, while UK punk outfit Sex Pistols ...

Authorities have seen a surge in seizures of guns and ammunition flowing from the United States to Latin America and the Caribbean, fueling conflict in regions already struggling with violence and ...

(Lewis Perkins/Army) Army investigators are offering a $15,000 reward for information on the theft of dozens of pistols, night vision goggles and a thermal optic that have been missing from Fort ...