The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

(d) “Female” means a person belonging, at conception, to the sex that produces the large reproductive cell. (e) “Male” means ...

The executive order’s definitions of male and female left room for interpretation contrary to the spirit of the order.

A technical article with an austere title ("Grouping of PFAS for human health risk assessment"). Signed by an "independent panel of experts." Published in a peer-reviewed journal belonging to the ...

New space missions will aim to measure Earth's biomass from space, return stranded astronauts to Earth and prepare for landing humans on the moon. DW explains what's in store for 2025. Suni ...