Earth Day is celebrating its 55th anniversary this year. The environmental event is marked by an estimated one billion people across more than 190 countries, according to the Earth Day Organisation.

MLive photographers were on hand to photograph the celebrations at 27 proms across Michigan on the weekend of May 3.

SAGINAW, MI - About 370 John Glenn High School students celebrated at their “At Last We See the Light” themed prom at Saginaw ...