Years ago, someone asked Spyderco founder Sal Glesser what folding knife he’d give his son to take into the military. Not having a good answer, Glesser designed one that would meet the rigorous needs ...

Kolkata: The city ranked fifth among 23 Indian state capitals in terms of PM2.5 concentration in March 2025 despite meeting the National Ambient Air Quality Standards (NAAQS), according to a ...

TOKYO -- The economic burden of health problems caused by hazardous small particles known as PM2.5 totals about $110 billion a year in Japan, according to a study by the University of Tokyo.

I’ve been lucky enough to own and handle many of the best pocket knives, including production and custom blades. Now, the Fifth Amendment protects me from self-incrimination, so I won’t say how many ...

New research shows that air pollution in Kolkata becomes highly toxic when PM2.5 levels cross 70 µg/m³, urging stronger pollution control steps. Trending Photos New Delhi: Researchers at the Bose ...

SparkFun’s “Air Quality PM1/PM2.5/PM10 Sensor – BMV080 (Qwiic)” is breakout board for the Bosch Sensortec BMV080 particulate matter sensor which the German company claims is the world’s smallest and ...

To combat the dangers of PM2.5 pollution and protect consumers from inflated prices, the Thai Cabinet has officially classified vacuum cleaners and air purifiers as controlled goods. This new ...