My 7-year-old son goes to this extra math class on Sundays. This is how they graded his Venn diagram homework. I'm sort of mad because I think he is correct. Is there any chance that he is ...

A bill advanced from the Iowa House Thursday that would regulate anaerobic digesters, or systems that break down organic material in an oxygen-deprived system to produce usable biogas and fertilizer, ...

Of particular interest to astronomers is the nebula's faint, Venn-diagram-like structure — two rings of ejected material shaped by the gravitational influence of the central stars. Scientists ...