Moreover, this particular vaccine would not be effective in sub-Saharan Africa, where AIDS has been most devastating.

FORBES: Magazine Article

SKA's proponents are talking of scattering its sub-telescopes over an area of 1m square kilometres, which would create an effective diameter of about 1, 000km.

ECONOMIST: Radio telescopes

Accordingly, I have decided to terminate the designations of the Republic of Mali and the Republic of Guinea-Bissau as beneficiary sub-Saharan African countries for purposes of section 506A of the 1974 Act, effective on January 1, 2013.

WHITEHOUSE: The White House

Dr Michel Alary, an Aids specialist in the department of medicine at Laval University and the Saint-Sacrement Hospital Research Centre, said that the extremely high temperatures in sub-Saharan African countries could prevent the gel working there if it requires room temperature to be effective.

BBC: Condoms

An effective acoustic seal allows for a high level of sound isolation, further reinforcing the headphones' powerful sub-bass reproduction.

ENGADGET: Sony ships new Extra Bass headphone lineup to the US, delivers that Direct Vibe to your brain