| 1 | The catalytic converter on your exhaust system contains cerium and lanthanum. | |
| 2 | Over just two months last summer, prices on cerium jumped more than 450 percent. | |
| 3 | Unlike familiar window glass, metallic glasses are alloys made of metals - in this case cerium and aluminum. | |
| 4 | While cerium oxide is a rare Earth element, it is one of the more common ones. Its abundance has been compared to copper. | |
| 5 | They also say the metal cerium is readily available, being the most abundant of the "rare-earth" metals. |