Big Bang Nucleosynthesis

• Weak interactions and n-p
• Nucleosynthesis
• BBN reaction chain
• Nucleosynthesis 2
• Evolution of elements
• Constraining OmegaB
• Observational Tests
• HII region spectrum
  
• Measuring helium (from Olive & Skillman 2004)
• Helium abundance (from Steigman 2005)
• Measuring deuterium
• Measuring lithium (from Steigman 2005)
• Recent summary (from Steigman 2005)