Facebook announced a new plan to help users make COVID-19 vaccine appointments & The secret to an easier allergy season revealed!

Facebook is launching a Covid-19 vaccine finder to help people get shots in their arms.

CEO Mark Zuckerberg announced the new tool in a Facebook post, saying it “shows you when and where you can get vaccinated, and gives you a link to make an appointment.” The vaccine finder is located in the newsfeed’s Covid Information Center, which is also expanding to Instagram.

The tool provides Facebook users with the locations of Covid-19 vaccination sites in their neighborhood, hours of operation, contact information and links to make an appointment. The tool draws location info from the Centers for Disease Control and Prevention’s Vaccine Finder.

Automatic defenses

When spring allergens—typically pollen from oak, elm, birch, poplar, or maple trees, depending on where you live—float through the air and reach the nose, the body sometimes overreacts. Mast cells in the lining of the nose mistake the harmless tree particles for dangerous invaders, and summon help by releasing chemicals such as histamine and tryptase, which then recruit more immune system cells to the battle.

Those chemicals, however, also trigger watery eyes, a runny nose, sneezing, coughing, and a sore throat—a gooey mess known as hay fever (allergic rhinitis).