More than once I've wanted to search for something that involved a range of numbers - and I just discovered that I can. It turns out you can use two periods (no spaces) to have your search include multiple numbers that form a range. For example, if you wanted to search for inventions of the late 19th century, you could use inventions 1850..1899. I discovered this feature when I was trying to track down the hottest recorded temperature on Earth. I knew it happened in Death Valley, but couldn't remember what it was. I found it by searching for death valley 130..140 degrees.