Science

Crows in a lab were able to distinguish shapes that exhibited right angles, parallel lines, and symmetry, suggesting that, like humans, they have a special ability to perceive geometric regularity.

I know that m1u1 + m2u2 = m1v1 + m2v2 Can any one prove that to me.

Let’s start with what should be obvious: The wolf pups are not dire wolves, and they haven’t been “de-extincted.”

The fluffy white canines — Romulus, Remus, and Khaleesi — unveiled this week by Colossal Biosciences are closer to something like designer dogs. More precisely, they are genetically modified, hybridized modern wolves, gestated in the womb of a domestic dog. But that wouldn’t sound as impressive on a magazine cover.