Is there anything that can react with molecular gaseous nitrogen?
From Wikipedia


  Elemental lithium reacts ("burns") in an atmosphere of $\ce{N2}$ to give lithium nitride:
  $$\ce{6Li + N2 → 2 Li3N}$$
  
  Magnesium also burns in nitrogen, forming magnesium nitride.
  $$\ce{3 Mg + N2 → Mg3N2}$$