Katy Perry and Orlando Bloom have reportedly ended their longtime engagement following rumors their relationship was on the ...

Lauren Sánchez and Jeff Bezos are set to tie the knot after the billionaire proposed more than two years ago with a stunning ...

When Prince William proposed to Kate Middleton in 2010, he did so with a deeply sentimental piece of jewelry: his late mother ...

When a celebrity couple gets engaged, the ring will often be magnificent—enormous, expensive, and custom-made. Given the very ...

Heme oxygenases are widely distributed enzymes involved in the oxidative cleavage of the heme macrocycle that yields the open-chain tetrapyrrole biliverdin IX, CO, and iron. For the first time, two ...