Did you know that beryllium is transparent to X-rays? Or yttrium is found in moon rocks and bullet-proof glass? Or that curium was named after Pierre and Marie Curie? Or that because tantalum is used in cell phones, the demand for it has become so immense that wars have erupted in central Africa?

I did, because I've been clicking through this interactive chart on the TED-Ed platform, which features a free lesson about every single element on the periodic table. Go ahead. Ask me anything about hassium.