Two artifacts found at a lake shore in Greece are the oldest wooden tools to be uncovered so far and date back 430,000 years.
One is a spindly stick about 2 1/2 feet (80 centimeters) long that could have been used for digging in the mud. The other is a smaller, more mysterious handheld chunk of willow or poplar wood that may have been used to shape stone tools, according to research published Monday in the journal Proceedings of the National Academy of Sciences.
