Mass Audubon’s Habitat and the Belmont Public Library will host these online presentations for all ages. Register at these links:

• Who’s Looking for Love? explores how some animals look for love in February and the myths that surround their quests. February 10, 3:30-4:30PM.
• Making Maple Sugar explores historical, current and revolutionary new practices in harvesting maple sap and turning it into syrup and sugar. March 3, 3:30-4:30PM.

Boston’s Museum of Science, through its #MOSatHome initiative, offers almost daily programs online, free for all ages. The current week’s schedule has the following for this week:

• February 1, 2PM: What to Look for in the Sky This Month
• February 2, 2:30PM: Virtual Planetarium: Exploring Space
• February 3, 3:30PM: Science in Action: Virtual Birding
• February 5, 1PM: Live Animals: Unique Defenses
  2:30PM: Virtual Planetarium: The Sky Tonight

The Harvard Museums of Science & Culture will present their online I Heart Science festival — four days of live discussions by Harvard scientists and graduate students, at-home activities, and views of museum specimens — February 12-15, 1PM-2:30PM each day. Register at the links below, at least 30 minutes before each event.

• Incredible Evolution: February 12.  Meet Harvard researchers studying how brains evolve and how stress can enhance performance. Watch recorded videos by Harvard scientists studying mice behavior or try your hand at comparing bone structures, collecting bugs, and investigating the Giant Moa skeleton.
• Tiny Creatures: February 13.  Meet live tardigrades (water bears), watch recorded videos featuring Harvard scientists who study bacterial resistance, ways to test for viruses, and how bacteria grow. Try making a water-drop microscope, comparing communities of microbes, and drawing microbes.
• Love the Earth, February 14.  Meet Harvard researchers studying how we can design batteries large enough to power a building and investigate what it takes to save endangered species. Try growing crystals, modeling volcanos, and closely looking at an amethyst geode.
• Faraway Worlds, February 15.  Meet Harvard researchers studying how we study the sun and what we hope to learn from missions to Mars. Try investigating light, explore what we know about coelacanths and hear the story behind the museum’s Kronosaurus specimen

The 7th annual Sharon Math and Science Tournament (SMST) will be held virtually on March 27, 1PM-6PM. It’s organized each year by a team of Sharon High School students to foster passion for STEM through collaboration and critical thinking. Middle-school students from anywhere are invited to register, individually or in teams of 4-6. For more information, see the flyer, or read the FAQs or email smst.sharonschools@gmail.com.

Boston’s Museum of Science will host the first of three free, online town hall sessions, Vaccine Decisions:  Rolling Out the Vaccine, on January 26, 5PM-6:30PM. WBUR Health & Science Reporter Angus Chen will moderate a panel of experts in medicine and public health discussing how the COVID-19 vaccines will be distributed, in what priority order, against what measures of equity, and managed by whom? There will be opportunities to ask questions in small-group sessions. Register here.

Harvard Museums of Science and Culture will present a free, live, online, family-friendly event, After-School Animal Encounters: Defense, on February 2, 3PM-3:45PM. Museum staff will introduce live animals and explain many amazing and bizarre ways that animals defend themselves or avoid confrontation. Register here to get a link to the event and to make a voluntary contribution if you wish to support HMSC.