Marc Ponsen moderated a high-profile national debate on climate policy in the Netherlands. The debate featured key policymakers, environmental experts, and industry leaders discussing the country's approach to climate change. His moderation was praised for maintaining a balanced and informative discussion.

Marc Ponsen was appointed as a foreign correspondent for RTL Nieuws in Brussels, Belgium. In this role, he covered significant events related to the European Union, providing in-depth analysis and reporting on EU policies and their implications for the Netherlands and Europe as a whole.

Marc Ponsen published a book that delves into the complexities of the Dutch political landscape. The book offers insights into the inner workings of political parties and the challenges faced by politicians in the modern era. It was well-received by both critics and readers for its thorough analysis and engaging narrative.

In recognition of his outstanding work in investigative journalism, Marc Ponsen was awarded De Tegel, one of the most prestigious journalism awards in the Netherlands. This accolade was a testament to his dedication to uncovering the truth and his ability to deliver impactful stories that resonate with the public.

Marc Ponsen led a groundbreaking investigative report on political corruption within local government bodies in the Netherlands. This report uncovered several instances of misuse of public funds and led to increased scrutiny of political practices. The investigation was widely praised for its depth and impact.

In 2010, Marc Ponsen joined RTL Nieuws, a major Dutch television news service. At RTL Nieuws, he quickly established himself as a key figure in the newsroom, taking on roles that involved both reporting and editorial responsibilities. His work contributed to the network's reputation for reliable and timely news coverage.

Marc Ponsen began his career at De Telegraaf, one of the largest daily newspapers in the Netherlands. During his time there, he honed his skills in general reporting, covering a wide range of topics from local news to national politics, which laid the foundation for his future in journalism.