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 ...

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The United States changed a major customs rule on August 29, 2025, and this change caused thousands of packages to get stuck in warehouses across the country. Before this date, any package coming from ...

Children as young as 4 years old are capable of finding efficient solutions to complex problems, such as independently inventing sorting algorithms developed by computer scientists. The scientists ...

Trying to distinguish between the emails directly sent to me and which ones I was just being Cc’d into in my Outlook Inbox used to take me a heap of time. I’d need to wade through each one and read ...

There is a new sorting algorithm a deterministic O(m log2/3 n)-time algorithm for single-source shortest paths (SSSP) on directed graphs with real non-negative edge weights in the comparison-addition ...

In the pantheon of prestige rap, it never gets fancier than a Clipse reunion. While Pusha T and Malice predated the whole “play this street rapper at New York Fashion Week” motif, their stylishly ...