Dogs are often used in airports to sniff out explosives or illegal drugs. But a high-tech machine has been developed that can "sniff" the air, so baggage handlers and bomb experts can check luggage and containers without touching them. VOA's Deborah Block has more.
Nearly 4,000 companies and 170,000 people will descend on Las Vegas next week for CES, the massive consumer electronics show. For many small technology companies, the event is a big opportunity to raise their profile. VOA's Michelle Quinn visits one San Francisco company to learn how they prepare for "the Super Bowl of conferences."