A dairy cow giving birth to extremely rare quadruplet calves has been described as "unheard of" by farm staff.

A nurse in Gaza has told the BBC his wife and six children - including a group of quadruplets - were killed in an attack in the central Gaza strip.

Unfortunately, she says, she may be having quadruplets and she knows Che can’t afford to raise them: “You work one day a week,” she said.

“That would be so fun meeting chickens,” said 7-year-old Mason, who wore a matching yellow sweater with his fellow quadruplets.

They theorized that the atom is actually doing many things simultaneously: scattering not only single photons but also, through an entirely different process, photonic pairs, triplets and quadruplets.