Skeptics claim all crop circle formations are man-made hoaxes in contemptuous disregard of abundant corroborated scientific evidence to the contrary. We therefore invite their own evidence to explain or disprove the following:

• How plant material in the genuine formations is altered at the cellular level.
• How the crystalline structure of the soil is radically changed while (in stark and measurable contrast to the moist surrounds) is often depleted of moisture.
• How the biophysical – biochemical nature of the plants is significantly altered.
• The sudden deposits of magnetite in the hundreds of percentage-points above normal.
• The immediate and often permanent failure of electronic equipment upon entering the formations.
• Expulsion cavities in the blown nodes of the plant stems.
• Filmed multiple balls of light in and around crop circles.
• Military helicopters chasing the balls of light (always without success.)
• Why the military would take keen and urgent interest in only pranks and hoaxes with helicopters appearing within minutes of the emergence of balls of light?
• Measurable fields of electromagnetic energy.
• How planks and string cannot accomplish massive circle formations in fields of snow or carve intricate patters through lake ice – some too thin to support the weight of a small child.
• Control experiments (Please see BLT research website)
• Canadian & Czech Republic huge tree formations bent into formation patterns just above ground level defying all biological explanation.

All we've had in response is the blinkered dogma of disbelief.

A belief-system does not constitute evidence.

We aslo invite skeptics to explain how it is that the African Dogan tribe have a remarkably extensive knowledge of the star system Sirius.

For centuries the Dogan have held as their most sacred religious tradition a body of knowledge of the star Sirius which should be impossible for any primitive tribe to know. They consider, for example, that the most important star in  the sky is Sirius B, a small star that orbits the bright star Sirius. But Sirius B is invisible to the unaided eye and was only photographed via telescope for the first time in 1970.

Their ancient drawings show the Helical rising of Sirius with the Sun and Sirius joined together. They show the rings of Saturn and the four major moons of Jupiter as well as the elliptical orbit of the invisible star Sirius B around Sirius and relate that, not only is it a dense and heavy star, which it is now known to be far more dense than earth but correctly note that the elliptical orbit is completed once every 50  years, an event they celebrate at exactly the proper moment, even if only once or twice in a person's entire lifetime!

The only access a primitive African people could have had to such sophisticated knowledge of a distant and invisible star system would be through the visit to our planet in ancient times of extraterrestrial beings who somehow described and explained from whence they had come. To add to the mystery are strange cliff dwellings that were carved into the Hombori mountains above the Dogan villages 
many centuries ago. The rooms are far too small for normal size humans to live 
in. Dogan legend has it that these dwellings were inhabited by 
a long-vanished people they call "the little blue men." Was it from these beings that the Dogan received their remarkable knowledge of the cosmos?