Complex sentence: On the one hand it advocated for geographically remote technical fixes (i.e. CCS and biofuels), whilst on the other hand, the public was asked to take on the prime responsibility of reducing emissions.
Split into simpler sentences: On the one hand it advocated for geographically remote technical fixes (i.e. CCS and biofuels). Whilst on the other hand, the public was asked to take on the prime responsibility of reducing emissions.