A dance of black holes is expected to occur in our own Milky Way galaxy in about 3 billion years, when astronomers predict it will collide with the Andromeda Galaxy.
Feely says oceans are absorbing carbon dioxide from the atmosphere, which makes them more acidic. He advises 'drastic atmospheric CO2 emission reductions, on the order of 80% by 2050' to avoid serious damage to ocean ecosystems.
Every winter, people in North America are encouraged to go outside and count birds, for science. A report on the 2009 winter bird count, aka the Christmas bird count.
Malcolm Potts said he agrees with the many studies which suggest that empowering women through increased access to education and contraceptives is key to 21st century peace and stability.
Haddad said that, in other developing countries, when income goes up, malnutrition goes down by 3-4%. But even with India's booming economy, the numbers of malnourished kids have remained practically the same.