For security reasons, the plane had to fly with the view from its passenger-seat windows blocked once within 60 miles of the Falklands.

Under Canadian rules, the defensive line can only hold up or block a receiver within one yard of the scrimmage lines.

One route of protection involves blocking the capsase activity within the host cells.

The government has been implicated in recent efforts to block access to Twitter within the country.

It took the edge off certain emotions by blocking the chemical components of those emotions within the body.

They typically require hydrogen rich shielding, such as concrete or water, to block them within distances of less than a meter.

In Bridgeport, proposals are being considered that would block the sale of cigarettes within a certain area around every school and curb advertising.

We get the impression that this proposal will still be excluded from the agenda or systematically blocked within the Council.

The fungus also blocks water and nutrient transport within the tree.

Embolism blocks small arteries within the brain, causing dysfunction to occur.