CO2 does not directly warm the troposphere because it is a greenhouse gas that primarily absorbs and re-emits infrared radiation in the upper atmosphere, rather than directly heating the air. This process leads to a net warming effect on the Earth's surface, but not on the troposphere itself. Instead, the warming of the troposphere is primarily driven by the transfer of heat from the Earth's surface through convection and advection processes. **

The troposphere is higher over the equator than over the poles because of the difference in temperature between the two regions. The equator receives more direct sunlight, leading to warmer temperatures and creating a larger vertical extent of the troposphere. In contrast, the poles receive less direct sunlight and are generally colder, resulting in a shallower troposphere. This temperature difference creates variations in air density and pressure, which in turn affect the height of the troposphere. **

The troposphere is higher at the equator than at the pole because of the difference in temperature between the two regions. The equator receives more direct sunlight, which heats the air and causes it to expand, pushing the top of the troposphere higher. In contrast, at the poles, the sunlight is less direct, leading to cooler temperatures and a lower troposphere. This temperature difference creates a gradient in the height of the troposphere from the equator to the poles. **

The caricature of the summit conference in Helsinki shows the leaders of the United States and Russia, Donald Trump and Vladimir Putin, sitting at a table with Trump holding a puppet string attached to Putin. This caricature is a satirical representation of the perception that Trump is under the control or influence of Putin, suggesting that Putin is pulling the strings and manipulating Trump. The image reflects the controversy and speculation surrounding the relationship between the two leaders and the potential influence of Russia on the United States. **

A symposium is a formal gathering or meeting where experts in a particular field come together to discuss and exchange ideas on a specific topic. It is often organized as a series of presentations, panel discussions, and Q&A sessions, allowing participants to share their knowledge and insights with each other. Symposia are commonly held in academic and professional settings, providing a platform for networking, collaboration, and learning within a specific discipline or industry. **

Commercial airplanes fly best at their cruising altitude at the upper end of the troposphere, in the region of the tropopause, because the air is thinner and the atmospheric pressure is lower at higher altitudes. This allows the airplane to experience less air resistance, resulting in improved fuel efficiency and faster speeds. Additionally, the upper troposphere is generally characterized by more stable and predictable weather conditions, reducing the likelihood of turbulence and providing a smoother ride for passengers. Finally, flying at this altitude also minimizes the risk of encountering severe weather phenomena such as thunderstorms and icing, which tend to occur at lower altitudes. **

"Der Kongress tanzt" is a German phrase that translates to "The Congress Dances" in English. The phrase originated from the Congress of Vienna in 1814-1815, where European diplomats and leaders gathered to reorganize Europe after the Napoleonic Wars. The phrase is a metaphor for the diplomatic and political maneuvering that took place during the Congress, likening it to a dance where participants carefully navigated their relationships and alliances. It reflects the complex and intricate nature of international diplomacy and negotiations during this historic event. **

A convention is a formal agreement or a set of accepted norms and practices that govern behavior in a particular context or industry. It is a customary way of doing things that is widely recognized and followed by a group of people. Conventions help to establish consistency, order, and predictability in social interactions or professional settings. They can vary across different cultures, societies, or fields of study. **