Dyed my hair :) but i'm gonna dye my hair blonde

The increase of pollutants from in mexico has raised concerns about garage to health and the environment

On nights when we see the new moon phase, what side of the moon are we seeing?

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks