It is the largest donation in the museum 's 186 - year history .
The endowment will support and rename the museum 's education division as the William and Charlotte Bloomberg Science Education Center , in honor of Bloomberg 's parents .
Bloomberg is the largest donation in the museum 's 186 - year history .
The endowment will support and rename the museum 's education division as the William and Charlotte Bloomberg Science Education Center , in honor of Bloomberg 's parents .