Complex sentence: Giving What We Can conducts extensive research into the relative effectiveness of charities and provides a list of those which it most highly recommends: currently this includes charities working to treat neglected tropical diseases (NTDs), tuberculosis and malaria.
Split into simpler sentences: Giving What We Can conducts extensive research into the relative effectiveness of charities, and provides a list of those it most highly recommends. Currently this includes charities that work to treat neglected tropical diseases (NTDs), tuberculosis, and malaria.