Madonna activates a Twitter account for one day and answers questions from fans and critics.

Experts say a "swarm" of small earthquakes off the northwest coast of Vancouver Island are part of the normal seismic activity in the area, and they could continue for several more days.

Children under age four should move at least 180 minutes a day, according to the first Canadian physical activity guidelines for that age group.

Neo Material Technologies was the most-active company Friday on the Toronto Stock Exchange, rising more than 37 per cent a day after the Canadian rare earth processor announced a $1.3-billion friendly takeover offer.