July 25: Scientists have uncovered what causes the spectacular Northern Lights. MSNBC.com's Alan Boyle explains the mystery. (MSNBC)

July 25: MSNBC’s Joe Scarborough sets up a quiz to delineate regular bloggers from the infamous “Cheetos Brigade.”  Chris Arsiens of the blog, TV Newser, defends himself against accusations, professes his love of Dumbledore and Air Supply, all while managing to describe the difference between what he does, and what Joe’s enemies do. (Other)

July 25: Could a new japanese bicycle design one day replace your mini-van for transporting the kids? MSNBC.com's Keva Andersen reports. (msnbc.com)

July 25: NBC's Mike Wendland looks at some of the new applications for the iPhone. (NBC News Channel)

July 24: If you love the Sims, we've got a sneak peak at your next favorite video game.  NBC reporter Scott Budman reporting. (NBC News Channel)

July 24: 'Comic-con' the yearly convention where movie and TV executives look to discover the next big thing, is finding it's future lies in digital formats and online media. CNBC's Julia Boorstin reports. (CNBC)

July 24: Concern over the health of Apple CEO Steve Jobs, has some wondering about the need to disclose health issues of a leader at a publicly-held company. CNBC's Sue Herera hosts a discussion. (CNBC)

July 24: At a Microsoft conference, CEO Steve Ballmer says his company envisions a $1 trillion dollar online market, and remarks on Yahoo merger attempts and a resurgent Apple. CNBC's Jim Goldman reports. (CNBC)

July 24: Instead of filling up, try plugging in. Electric cars have a big showing at this year's British International Auto Show. MSNBC.com's Keva Andersen reports. (msnbc.com)

July 24: Brian Cooley from CNET.com shows TODAY’s Hoda Kotb and Kathie Lee Gifford some great electronics you can get at a low price. (Today Show)

July 24: In this video blog, NBC's Mike Taibbi talks to John Rich, the only war correspondent to cover the entire Korean War. (Nightly News)

July 24: TODAY hosts talks about a new company called SlyDial that directs you straight to voicemail to avoid unwanted phone conversations. (Today Show)

July 24: TODAY’s Jenna Wolfe gets an inside look on how Dyson vacuums are made with the inventor, James Dyson. (Today Show)

July 23: Galapagos Islands turtle "Lonesome George' surprises park rangers by mating after 36 years of captivity. Msnbc.com's Dara Brown reports. (msnbc.com)

July 22: Scientists at the company DeCode are helping to solve genetic mysteries that could mean a healthier life for people all over the world. NBC's Chief Science Correspondent Robert Bazell reports in Part Two of his report from Iceland. (Nightly News)

July 22: Ron DeLong, inventor of the ScanGauge, shows his electronic gas saving device on CNBC. (CNBC)

July 22: TODAY’s Al Roker talks to eBay gadget director Cat Schwartz about technology gadgets you can get for free or at low cost. (Today Show)

July 22: TODAY’s Amy Robach tries out an online personal assistant to help her out with her daily tasks. (Today Show)

July 21: From the 76-year-old CEO of Marriott hotels to a Coca-Cola archivist, companies are getting Web-savvy and appointing bloggers to interact with their customers online. NBC's Amy Robach reports. (Nightly News)

July 21: The small country of Iceland is quickly becoming critical to understanding genetics, since most members of its population can easily trace their ancestry. NBC’s Robert Bazell reports. (Nightly News)

July 21: A rare find in Arkansas where officials have apparently discovered a set of conjoined twin birds. Msnbc.com's Dara Brown reports. (msnbc.com)

July 18: As a tribute to the latest Batman movie, Countdown’s Keith Olbermann talks to theoretical physicist Michio Kaku about whether superpowers may one day be available to real-life humans. (Countdown)

Get the long-range perspective on the concept behind a "railroad to the sky," from the Space Elevator Visualization Group. (Other)

July 18: NBC's Ann Curry reports. (Nightly News)

July 18: Amsterdam's Artis Zoo says the baby red panda being nursed by a tabby cat has died. Msnbc.com's Dara Brown reports. (msnbc.com)

July 18: Researchers in Australia are dissecting a giant squid to uncover answers about climate change. (msnbc.com)

July 17: Msnbc.com's Alan Boyle narrates a time-lapse video showing the moon passing over Earth's disk, as seen by the Deep Impact probe 31 million miles away. (Other)

Cornell University's Andrew Bass narrates infrared video of the calls made by midshipman fish, close relatives of the toadfish. (Other)

July 16: NASA officials say Mars was covered once by lakes, rivers and other bodies of water that could have supported life. NBC's Robert Bazell reports. (MSNBC)

July 16: In Chicago, a video game based on killing President Bush is causing protests, but the artist says its "confrontational art," targeting the U.S. war policy. WMAQ's Lauren Jiggetts reports. (NBC News Channel)