A massive crater was spotted on Google Earth. It could be a scar from an ancient meteorite impact

While getting ready for a camping trip, an amateur astronomer spotted a possible crater. It appears to be a match, pending ...
IEEE

Social Sourcing: Incorporating Social Networks Into Crowdsourcing Contest Design

Abstract: In a crowdsourcing contest, a principal holding a task posts it to a crowd. People in the crowd then compete with each other to win the rewards. Although in real life, a crowd is usually ...