Woops sorry, that's .GOV not .com This will be the most accurate since they supply the data that all others use, and their analysis is faster and based on rigorous science.

Forget apps, go to www.noaa.com enter your zip then add that to your home screen. Better than any app; clean, accurate, readable, much better than the links. Also, go to the satellite and add that too.

Beware, lately Life-hacker has given a lot of really BAD advice. "How tos" for things no one should be doing. Like this. There are a lot of things in the world that we CAN do, but that common sense tells we should not.

Paper towels will do the same thing

Sugarless gum. That and a small baggy with cooking spices (one sweet, one spicy) are "must haves" for backpacking and camping. They are light, easy to pack out, don't require a week's forethought, and take little room in bear bags. Chewing helps focus concentration if needed, lots of other minor uses and repairs…

OK after reading the many inane responses from people who surely don't know more about this than a gorilla knows about Gorilla Glass, I got curious and found this helpful information from the ADA: http://www.ada.org/public.aspx. As expected their advice is different for differing constituencies. You're welcome.

Lifehacker gave the best tip a few weeks ago: READ the INSTRUCTIONS for your specific device. That can almost certainly be found in 5 minutes with Google. Bookmark it for future reference, or just save it to your desktop. Better yet; print it and leave a copy in the pantry/kitchen for others.