Even if you’re not exactly new to using an outdoor grill, not everyone has that knack for knowing exactly how well the meat is cooking. You could get a meat thermometer, but Weber has taken it a step further with a device that wirelessly connects to your phone. Not only does it tell the temperature, you get other alerts and built-in recipes. Is this smart grill gadget worth it?

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Optical illusions can be fun, but they also shed light on the complex ways our brain can convert a 2D image into a 3D space in our minds. So what can we learn from an excellent optical illusion, and what are we still looking to discover?

War has been a consistent part of human history, but weapon technology has grown exponentially over the past 100 years. While many newer weapons have been successful, other ideas didn't turn out quite as planned and ended in disaster.

Our favorite internet engineer, Mark Rober, is back! This time, he works with a 12-year-old to create the world's most powerful T-shirt cannon. You won't believe how far this thing can shoot. This is a fun one to watch with the whole family — especially young inventors.

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