The best TSA-approved luggage locks keep your belongings secure and can be opened for routine inspections without damaging your bags or the lock. Some suitcases—including many picks in our guide ...

Enzyme mechanisms are the chemical transformations, and the steps within them, generated by enzymatic action on substrates. The mechanism of enzyme catalysis is similar in principle to other types ...

Man holding the ring of a metal gate latch - Antoni M Lubek/Shutterstock ...

Aluminum is often used for the gate itself and is highly resistant to corrosion, but it isn't as strong as steel and not really appropriate for latch mechanisms. Stainless steel is another tough ...