An attack on Twitter shut the social-networking site down for at least two hours Thursday, causing headaches in the online community and glitches in other Web sites like Facebook. Twitter co-founder Biz Stone said the site was hit with a "denial of service attack," or an attempt to shut the site down by overwhelming it with traffic.
Renewable energy trailer on display
On Thursday, Mobile Gen showed off its prototype renewable energy trailer in Muskegon.It uses four types of energywind, solar, battery and propane, and works as a hot water heater.
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