Spring is in the Air

Now that days are longer than nights (thanks equinox) spring is officially.. sort of here. Eventually that means flowers and then ALLERGIES. Allergies it turns out are an overreaction of your immune system. Here's It's Okay to be Smart to explain.

One particular springtime flower that is opening now, the daffodil, is not so innocent. SciShow unmasks this deceptively deadly bloom.

Daffodils aren't all bad though, they've inspired joy as they announce spring for years. Like in William Wordsworth's poem I Wandered Lonely as a Cloud. Click to Enlarge.