[David Windestål] is back in the USA, and this time he’s armed and dangerous! He’s built an incredible RF cannon prop (YouTube link) as part of his drone hunter wardrobe for the Rotor DR1 series.

This might be the most interesting drone competition since the Outback Challenge. I wouldn’t use a single airframe, have a look at the bottom for what I would do. The US Defence Advanced ...

A lipase test is a blood test that measures the level of a digestive enzyme called lipase in your blood. It may also be referred to as a serum lipase or LPS. What is lipase? Your doctor might order a ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

Food intolerances, food sensitivities, and food allergies can all produce negative symptoms, ranging from undesirable to downright dangerous. Food intolerances can produce uncomfortable or ...

Instructions tell people what to do and how to do it. They need to be clear and precise so that the reader or listener can follow them. When you read instructions, it's important to read slowly and ...

Pregnancy tests are most accurate after a missed period. Early tests may detect pregnancy 10 days after conception but are less accurate. Pregnancy tests are most accurate when you use first morning ...

A 25-hydroxyvitamin D test checks if your body has too much or too little vitamin D. The test involves a simple blood draw, and you don't need to fast beforehand. Risks from the test are rare but ...