What type of energy sources can't be replaced readily within a 30-year span?

Science Trivia / February 14, 2026

Nonrenewable Energy Sources. Coal, oil and gas are non-renewable energy sources.

In which desert would the highest sand dunes be found?

Science Trivia / February 13, 2026

Sahara. The Sahara straddles the equator and contains the highest sand dunes.

What is a "placebo"?

Science Trivia / February 13, 2026

A Treatment With No Effect. A patient with high expectations about treatment will often improve even if it is a "placebo", an inactive substance like sugar.

Who is credited with identifying HIV as the cause of AIDS?

Science Trivia / February 12, 2026

Robert Gallo. The death of Gallo's sister from leukemia inspired him to become a cancer researcher.

What does splitting a laser light into two beams through a silver mirror make?

Science Trivia / February 12, 2026

Hologram. Holography was invented in 1947.

Which gas comprises most of Venus' atmosphere?

Science Trivia / February 11, 2026

Carbon Dioxide. Venus' atmosphere is mostly carbon dioxide, which causes an intense greenhouse effect.