Some other tennis venues, such as those used for the Australian Open have sliding roofs - but that tournament is on hard courts, which react differently to a living surface like grass.

BBC: SPORT | Tennis | The Wimbledon roof debate

Both are trying to make a living on a planetary surface and both are trying to do this as efficiently as possible without wrecking their living conditions.

CNN: How the search for aliens can help sustain life on Earth

Some scientists still defend those results: the soil may have had microbes living on ice beneath the surface, they say.

NEWYORKER: The Martian Chroniclers