Comment on

• Hemispheric aerosol vertical profiles: anthropogenic impacts on optical depth and cloud nuclei.

  Clarke A, Kapustin V. Clarke A, et al. Science. 2010 Sep 17;329(5998):1488-92. doi: 10.1126/science.1188838. Science. 2010. PMID: 20847262
• Rainforest aerosols as biogenic nuclei of clouds and precipitation in the Amazon.

  Pöschl U, Martin ST, Sinha B, Chen Q, Gunthe SS, Huffman JA, Borrmann S, Farmer DK, Garland RM, Helas G, Jimenez JL, King SM, Manzi A, Mikhailov E, Pauliquevis T, Petters MD, Prenni AJ, Roldin P, Rose D, Schneider J, Su H, Zorn SR, Artaxo P, Andreae MO. Pöschl U, et al. Science. 2010 Sep 17;329(5998):1513-6. doi: 10.1126/science.1191056. Science. 2010. PMID: 20847268