Related Clues:

• Grey matter going across the pond?
• Loss of people's ability to benefit others
• Clever people get aw ay with it
• Loss of talented people
• Rhythmical emigration of highly skilled people
• Repeatedly note fall that's reducing human resources
• Cause of diminishing intelligence
• Daughter, caught between showers east of Bangladeshi capital, minds going abroad?
• Note artist at home repeatedly showing loss of intellectual capacity
• Learned moves from bachelor, finally honed in showers
• Loss of intelligence suggesting cups down the sewer?
• Intelligence leak
• Mix-up Brian Pipe leaving the country for intellectual reasons
• Migration of talent
• Migration of highly trained people