Here are the 59 startups that demoed at Y Combinator Winter '16 Demo Day 2

Life essentials made better and more affordable." These are the types of startups that partner Paul Buchheit said were demoing today at Y Combinator's Winter 2016 Demo Day 2. Yesterday, we covered the first 60 startups from the batch, and picked our 7 favorites. Buchheit went on to say about today's big aspirations, "Those challenges may seem too large or too complex for a startup to solve. But as Kyle and Dan showed us with Cruise, often the hardest problems are the best investments." He was referring the GM's 1 billion acquisition of Cruise, a YC startup that built self-driving car tech. Today, the room was jam packed, with more chairs brought in for rich investors who were forced to sit on the floor yesterday. Buchheit joked about the first YC batch in summer 2005, saying "Back then no one wanted to go to Demo Day." Someone in the crowd yelled, "15 people wanted to go to Demo Day." Now, there are several hundred VCs avidly watching the presentations. Over the past few years, Y Combinator has expanded to accept startups from a much wider range of industries than traditional apps, including biotech, energy, hardware, and international logistics. When we spoke to investors in the past, some worried they might not have the expertise necessary to evaluate these companies. Now, YC President Sam Altman tells me many VCs have "hired other experts" to fill the gaps. He says "it's become fashionable to hire a Chief Science Officer." As a result, Altman believes that when it comes to funding, these alternative startups "seem to be doing just was well if not a little better" than their traditional software batchmates. Spinal Singularity – Better catheter Last year, over 5 million people were catheterized. Spinal Singularity wants to tap into the 2 billion urinary catheter market with a connected catheter that allows you to control the flow of urine by actuating a magnetic valve. The connected catheter is minimally invasive, and can be inserted or extracted in your own home.