Secondary organic aerosols (SOA) are long known to be of great importance to atmospheric composition and climate, and it has recently become established that atmospheric concentrations depend on not just the chemical processes involving individual precursor VOCs, but also interactions between different VOCs and their oxidation products. Gao et al. studies two common biogenic VOCs (isoprene and α-pinene) and investigates the temperature dependency of these interaction effects on SOA yields. By projecting these results over the temperatures typically experienced by a tropospheric airmass, they are able to show that not considering this temperature effect would lead to a negative biases in SOA prediction in Europe.