JOHANNESBURG (AP) — Nelson Mandela is being remembered today as a man who "tells us what's possible not just in the pages of dusty history books, but in our own lives as well."

Those words came from President Barack Obama, who was greeted with enthusiastic applause by the tens of thousands who gathered in a soccer stadium in the Johannesburg neighborhood of Soweto for the memorial service.

Obama also said that in South Africa and around the world, the progress that's been made can't be allowed to cloud the fact that more work must be done.

The crowd included nearly 100 heads of state and government.

The cold, rainy weither and some public transportation problems may have kept many people away. The 95,000-capacity stadium was only two-thirds full.

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