Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

There’s a lot one could write about Galileo, the Italian astronomer and physicist. But on a snowy Friday morning in December, during a lesson helping students draft essays about outer space, teacher ...

In her new book, Syme's Letter Writer, Rachel Syme of The New Yorker explains how to write a delightful letter to a loved one. Unlike texting and email, old-fashioned letters, hand-addressed and sent ...