Arctic salt lake, eyebrow communication, and creating Captain America PLUS - Hummingbird songs, and the double-edged sword of aerosol reduction

Quirks and Quarks

Newly discovered salt lakes in Canadian arctic help us understand Jupiter's moons; Why humans ditched the mono brow, for two eyebrows; Chasing Captain America: Author explores real-life science that could build a super-soldier; Hummingbirds 'sing' with their tail feathers to impress the females; Catch-22: polluting aerosols cool the Earth, removing them warms it; Can we make veggies winter hardy like daffodil plants?

More From AudioMobile/Quirks and Quarks