How are climate and atmospheric CO₂ changing the competitive interactions between trees and grasses to degrade savanna ecosystems?

How can we change land-use from pasture to woodland, to harness the potential of ecosystems to capture carbon and combat climate change?

How did C₄ photosynthesis evolve in grasses, and how have these species adapted to diverse global environments?

What have been the roles of climate and evolutionary history in assembling and maintaining savanna ecosystems?

How did domestication change the biology of our crop plants, how did agriculture begin, and what are the modern legacies of these ancient events?

How is plant growth controlled by the supply of carbon from photosynthesis verses the demand for carbon in growing tissues?