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The majority of out of school children are girls, and much of the rhetoric about improving access to education focuses on girls. A gender breakdown of results from randomized evaluations The majority of out of school children are girls, and much of the rhetoric about improving access to education focuses...
The resulting radiocarbon combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire 14C by eating the plants.
When the animal or plant dies, it stops exchanging carbon with its environment, and from that point onwards the amount of 14C it contains begins to reduce as the 14C undergoes radioactive decay.
The dates range from around 21,000 to 13,800 cal BP.
We show that the age of the ancient pottery ranges between 18,300 and 15,430 cal BP.
In Uganda, researchers conducted a randomized evaluation to test the effectiveness of a program in which landowners were paid to not cut forest trees on their property.