These range from planting mangroves to increase water catchments in high flood regions to providing low-cost risk transfermethods to farmers in developing countries.
The US government is building a coalition of federal agencies to promote the use of efficient electronic payment transfermethods through The 20% Initiative, an initiative aimed at helping the U.S. us get 20% more bang for our buck.
Other, newer methods use the shape of the human head, or head-related transfer functions, to trick the listener by placing false cues into two channels.