If you have missed it on the news there is a horrible flooding situation north of Rio de Janeiro, in communities such as Teresopolis and Novo Friburgo. Almost 500 people are confirmed dead and many more remain missing. The rain is expected to continue as well.
There is a shortage of blood, to donate blood in Rio de Janeiro:
Banco do Sangue: Rua Cde Irajá, 183 - Botafogo, Rio de Janeiro - 21 2527-7300
Yesterday the lineups to donate were apparently really long but you can make an appointment to donate blood by callling Hemorio (21) 2332-8611 or 0800 282-0708.
The Hemorio runs from 8:00 to 18:00 hours (including Saturdays and Sundays) at Rua Frei Caneca 8, in Centro. To donate you must be between 18 and 65 years, more than 50 pounds and in good health.
Many malls and shops/grocery stores are accepting donations as well.