We’re back with pint glasses, water, salt, ice, food coloring and plimsoll lines for another Ocean Science Saturday in Harvard Square at Brattle Square. Rob Moir, Director, and Summer Intern Morgan Berman (Tufts) invite you to explore the motion of oceans, make marine life connections, and learn how to stop the world’s worst ocean pollutant.

Nitrogen pollution was responsible for the Mystic River’s massive fish kill last August.  Thousands of menhaden fish were chased by striped bass into an ocean dead zone of blooming algae, littering Everett’s shore (photographed above from Cosco Tire Center, below by Amelia Earhart Dam).

Stop nitrogen pollution from off your lawn by not spreading fertilizer.  If you think it’s needed, spread instead one-half pound per thousand square feet of lawn of slow release fertilizer in either spring or fall, not when weather is warm, daylight longest, and algae blooming.  This will encourage grass roots to grow deeper, be more resilience, put on more growth that is more resistant to weeds and pests, and captures more carbon to fight climate change.

Sign ORI’s pledge to act for lawns that do not pollute with healthier microbes in the soil, lawns that fight climate change by carbon capture and water retention from extreme weather events.