Kalu is a postdoctoral research fellow with James Cook University where she completed her BA/BSc (Hons) in environmental studies and earth sciences. Her PhD examined carbon cycle processes in tropical savannas of far north Queensland, with a particular emphasis on the spatial distribution of soil carbon and soil respiration.

She has also worked on projects examining the use of soil amendments in tropical agricultural soils, tropical vegetation structure in natural and intensively managed ecosystems, as well as soil carbon sequestration and modelling. Her research interests include biogeochemistry, stable isotopes, and the terrestrial carbon cycle.

Kalu joins LC3M to investigate how the enhanced weathering of basalt applied to soil under sugarcane could enhance production, improve runoff water quality, and reduce greenhouse gas emissions alongside carbon sequestration benefits.