Celebrations were held marking the 50th anniversary of the Main Botanical Garden of the Russian Academy of Sciences in Moscow.
In Ireland, "American wakes" were held, marking departure as if it were death.
Postmortem examinations revealed no evidence of "restraint, gripping or holding" marks inflicted before death.
"The market is extremely nervous to hold marks," said Andrew Busch, a trader with the Harris Trust and Savings Bank in Chicago.
When the day came, we held Mark close as physicians injected him with a sedative, then strapped his small body onto a gurney and wheeled him into the operating room.
Dubbed Rio+20, the conference was the largest UN summit ever held and marked the 20-year anniversary of the original Earth Summit also held in Rio.
The game was held to mark the 30th anniversary of the Heysel disaster and play was briefly suspended in the 39th minute to mark those who died.
Why are academics holding a marking boycott?
A concert may also be held to mark the occasion.
