Uranium is weakly radioactive because all its isotopes are unstable (with half-lives of the 6 naturally known isotopes, uranium-233 to uranium-238, varying between 69 years and 4.5 billion years).
The median annual wage for occupational therapy assistants was $59,010 in May 2016. The median wage is the wage at which half the workers in an occupation earned more than that amount and half earned less. The lowest 10 percent earned less than $39,160, and the highest 10 percent earned more than $80,090.
1 A public school, the University of New Mexico offers a master's in occupational therapy from $15,000 for state residents taking the maximum number of courses per semester, to $70,000 for non-residents taking courses at a slower pace. There are only a handful of accredited doctorate programs in occupational therapy, costing $43,000-$108,000 and typically taking 3-5 years to complete.