Give it up for Wallace H. Carothers, who created and patented nylon 70 years ago, and then dig in to this week's inventions:

• So happy together: The Yahoo! Mail Beta just took multitasking to new heights. Without even firing up your Yahoo! Messenger client, you can now IM your pals right from your Mail inbox. Watch a screencast of all the cool ways you can be that much more efficient in your communications here.
• Yodel Kappa Gamma: OK, so we’re not launching a new fraternity, but the recently announced beta for Yahoo! Go for Mobile 2.0 is going gamma. What does this mean? You can use your mobile phone to access Yahoo! News and use oneSearch to further search a specific topic or share the article directly with friends. Check here to see if you’re gamma-ready. We also announced that a whole lotta (tens of millions to be more exact) LG mobile phones around the world will come pre-loaded with Yahoo! services, including Yahoo! Go for Mobile 2.0, oneSearch, Yahoo! Mail, and Yahoo! Messenger. Stay tuned.
• Internet milestone?: Tim O'Reilly seems to think so. Unless you've gone AWOL, you’ve probably heard about Yahoo!’s new experiment that allows you to remix feeds and mash up web data. Pipes is still in beta, so keep the suggestions and feedback comin’. And make sure to check out some of the cool stuff your peers have already mashed up or read on to find out what the team has coming down the pipe (pun intended).
• Fantastico futbol: Whether it’s fantasy sports (espanol-style) or up-to-the-minute stats that you crave, here are two more reasons to get your game on at Yahoo! Telemundo Deportes. View detailed league news and stats at the new Mexican National Soccer League site and build your virtual roster at Liga Fantastica Mexicana, the first of five Spanish-language fantasy soccer games set to run this year.
• Don’t reinvent the wheel: Er, codes I mean. Developer newbies or programmers extraordinaire will do a happy dance when they check out Krugle on the Yahoo! Developer Network. Use it to find, save, and share codes written in six languages (think ActionScript, JavaScript, .NET, PHP, Python, and Ruby) before duking it out with your inner Code-zilla. Read more here.
• Play ball!: Fantasy Baseball '07 is officially open, ya’ll. So start finger flexing your way to playing GM of your own team. Any Yahoo! Sports fan can game in for free and access the new drag-and-drop roster and player ranker. For you fantasy fanatics, we’ve got Yahoo! Sports Fantasy Baseball PLUS, which includes scouting reports, pre-draft player selections, and prizes for winning teams. Hot dogs and brewskis coming right up!

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