Teo Blašković founded The Watchers in 2011 and edited it until 2026, covering seismic and volcanic activity, extreme weather, space weather and near-Earth objects. Articles on this page are his archive.
The Ogallala Aquifer is a vast, shallow water table aquifer located beneath the Great Plains in the United States. It underlies an area of approximately 450 000 km² (174 000 mi²) and its significant portions are at risk of drying up if it
"Fast radio bursts" (FRBs) are a new type of cosmological transients first discovered in 2007 and their physical nature is still not known. These cosmic chirps last for only a thousandth of a second and the characteristics of the radio
NASA's network of all-sky meteor cameras reported 23 Geminid fireballs over the United States today. This sharp uptick in activity signals the official beginning of the 2013 Geminid meteor shower.
For the next 3 to 4 days, Earth will continue to pass
Data from the Hubble space telescope suggests that enormous jets of water, more than 200 kilometers tall, may be spurting intermittently from the surface of Europa, ice-shelled moon of Jupiter.
Although it’s been known since 2005 that
New activity was observed at 2 volcanoes between December 3 and 10. During the same period, ongoing activity was observed at 11 volcanoes.
New activity/unrest: | Kliuchevskoi, Central Kamchatka (Russia) | Shiveluch, Central Kamchatka
The season of noctilucent, "night-shining", clouds has begun in the southern hemisphere and NASA's AIM spacecraft is monitoring a vast bank of rippling electric-blue NLCs blanketing almost all of Antarctica.
Noctilucent clouds
At this year's Fall Meeting of American Geophysical Union, held in San Francisco (December 9 – 13), several scientists made a presentation on weak Solar Cycle 24 and its consequences.
They agree that the current solar cycle is on track to be
In May 2008 the Chilean volcano Chaiten erupted spectacularly and exhibited remarkable lightning activity. Photographer Carlos Gutierrez captured a few images showing unusual kelly-green lightning channels. In this briefing, lightning researcher Arthur Few explains the
Three years of measurements by ESA's "CryoSat" satellite show that the West Antarctic Ice Sheet is estimated to be losing over 150 cubic kilometers of ice each year which is considerably more than when last surveyed.CryoSat observes Earth with a radar alti
US biologist who won the Nobel prize in Physiology or Medicine this year, Randy Schekman, announced this week that his lab would no longer send research papers to the leading scientific journals like Nature, Cell and Science because they
