Tomáš Grečko

Tomáš Grečko is a reporter at Denník N, sister publication of EUObserver. He studied European studies at Comenius University and began his career as a TV reporter at TA3 before moving into communications and later journalism. Since 2020, he has covered climate, energy, and weather, contributes a weekly climate newsletter, and is active in international journalism networks, while also pursuing long-distance running and co-authoring a children’s comic book.

We have no other planet. 10 charts showing the state of the globe to mark Earth Day
22 April 2026 by Tomáš Grečko
Earth Day has been celebrated since 1970. To mark the occasion, we present 10 charts that show the current condition of humanity’s only home.
Less gas, more sun and wind. Europe is handling the new energy crisis better than the Russian invasion one
16 April 2026 by Tomáš Grečko
The current energy crisis caused by the war with Iran could have hit Europe much harder, were it not for lower gas consumption and a marked shift towards renewable sources.
Counting the costs of a heating planet
29 March 2026 by Tomáš Grečko
With CO2 concentrations now at the highest level in the last two million years, Earth acts like an overheating smartphone unable to vent heat. 91 percent of this excess energy is surging into oceans, fueling “nuclear-grade” storms and $60bn wildfires. This isn’t just warming — it’s an accelerating climate emergency threatening global security and economic stability.
- Climate
- Energy
Iran war effect: boost for solar panels, US buyers turn to electric cars, but EU car sales may drop
25 March 2026 by Tomáš Grečko
European industry faces a difficult year, but for some companies there may be an exception: these are mainly suppliers and installers of solar systems.
El Niño is coming, meteorologists say ‘super’ version is possible
21 March 2026 by Tomáš Grečko
In recent history, the El Niño phenomenon has in most cases brought exceptionally hot and wild weather. And 2026 is likely to be the same, especially its second half.
- Climate