The research articles explore emissions trading, focusing on the EU ETS. They studied how changes to the EU ETS impact its cost-effectiveness. One key change, the Linear Reduction Factor increase, has a significant effect. They also looked at introducing a carbon price floor in the EU ETS, comparing different designs. One design quickly raises prices, while another has mixed effects. By considering firm behaviors like risk aversion and short-term thinking, they found these factors influenced market outcomes. The researchers also discovered that as time goes on, the costs of reducing emissions flatten, which affects firms' incentive to save emission allowances for the future.