This letter presents an efficient tag collision arbitration protocol, viz., the Fast Tree Traversal Protocol (FTTP). It estimates the number of tags using maximum likelihood estimation and adjusts the ...

Analysis - Baobab trees may be a proxy for measuring long-term use of land by humans. They live long, have economic benefits, and are used as shrines and markers on landscapes. Archaeologists have ...

New research has found that Swahili societies in Zanzibar landscaped baobab trees into their settlements 1,000 years ago, and ...