Sir David Attenborough's 100th birthday will be celebrated with three new shows, the BBC has announced.The broadcaster will mark Sir David's milestone on May 8 with a week of special programming featuring new and old shows by the presenter.The new programmes include Making Life on Earth: Attenborough's Greatest Adventure, Secret Garden and David Attenborough's 100 Years on Planet Earth.

Sir David Attenborough's 100th birthday will be celebrated with three new shows, the BBC has announced.The broadcaster will mark Sir David's milestone on May 8 with a week of special programming featuring new and old shows by the presenter.The new programmes include Making Life on Earth: Attenborough's Greatest Adventure, Secret Garden and David Attenborough's 100 Years on Planet Earth.