science

Who created the wheels in motion course

David Bruce conceived the idea for DefensiveDriving.com after a minor fender-bender with a Volvo in June 1998. Needing to keep the traffic ticket off his

Published: Mar 22, 2026

science

What isotope is produced by the ß decay of cobalt 60

The cobalt-60 isotope undergoes beta decay with a half-life of 5.272 years. Cobalt-60 decays to Nickel-60 plus an electron and an electron antineutrino. The

Published: Mar 22, 2026

science

How do you make mold and mildew remover

Mix 2 teaspoons of borax with 1/2 cup white vinegar in a spray bottle. Apply the mixture on mildew and let sit for about 30 minutes. The borax will scour the

Published: Mar 22, 2026

science

Is PVC pond liner safe for fish

PVC (Polyvinyl Chloride): A highly flexible product, it is safe for plants and fish. Most PVC liners are not UV resistant and must be covered with one foo...

Published: Mar 22, 2026

science

What is a don in healthcare

A director of nursing (DON) is a registered nurse who supervises the care of all the patients at a health care facility.

Published: Mar 22, 2026

science

When was the Clayton Antitrust Act

Aside from banning the practices of price discrimination and anti-competitive mergers, the new law also declared strikes, boycotts, and labor unions legal

Published: Mar 22, 2026

science

How do moths detect pheromones

Moth sex pheromones are detected by receptors on structures called sensilla

Published: Mar 22, 2026

science

How old is petrified wood in California

PETRIFIED FOREST: Three Million Year Old Redwoods Turned to Stone, Calistoga, California. “The petrified forest, dating from the Eocene Period, is the only

Published: Mar 22, 2026

science

How is needlepoint canvas measured

The count is determined by the larger holes, which is the usual use (sometimes called grow point). This canvas can also be worked over one thread (sometimes

Published: Mar 22, 2026

science

Why does a calorimeter have a lid

A calorimeter uses an insulated lid, or insulated surroundings. In the CAL2K the polystyrene surrounding is used as insulation to keep the heat of the liquid

Published: Mar 22, 2026