Proton-exchange membrane fuel cells (PEMFCs) are lightweight fuel cells being developed for applications in vehicles and portable electronics. One of the biggest challenges facing their development is the need for expensive platinum-based catalysts. In an effort to lower the cost, scientists are looking for ways to either reduce the amount of platinum required or completely replace the platinum with a less expensive material. But so far, alternative materials have not performed nearly as well as platinum, mainly because they have fewer and less accessible "active sites"—locations where the catalyzed reactions can occur.
Scientists are optimistic that having a full image of the human genome would help them better understand human evolution and pave the path for discoveries in
More flexible and better for the environment.
It is said to needed 36 percent less power to make and release up to 76 percent less carbon dioxide compared to standard bendable concrete made of concrete.
