From realistic NASA-based shuttles to fun lunar playsets, these are the best Lego space sets you can buy right now. We love Lego almost as much as we love space, and thankfully, Lego seems to too ...

The mechanism of enzyme catalysis is similar in principle to other types of chemical catalysis, for instance by involving a combination of several different types of catalysis. Determining enzyme ...

The Clean Development Mechanism (CDM), defined in Article 12 of the Protocol, allows a country with an emission-reduction or emission-limitation commitment under the Kyoto Protocol (Annex B Party) to ...