Above: The British isles and adjacent areas of western Europe (NASA).
The Prime Meridian newsletter is published by the Ecospheres Project, a research and media collaboration.
This newsletter looks at the cycle of the seasons in South East England and looks out from the Prime Meridian into the global environment. It steps back to look at the Earth in its astronomical context.
Environmentalists talk of the “Climate Crisis,” but we must look beyond climate alone and emphasise that the threat caused by human activity and harm to the Earth’s ecosphere involves numerous factors, all of which interact with each other in a complex way. This is why we have introduced the phrase “Earth Crisis” and we ask policy-makers, politicians, academics, journalists and campaigners to adopt this phrase, which reminds us of the realitiies of the problem that our species is facing.
We pursue also the search for other habitable worlds. This is an area of research in which the editors have been active. It promises to open new vistas in our understanding of how our living Earth belongs in the larger picture. At the same time, as space probes head to other worlds in a search for life, we assert the moral duty of space exploration to inflict no harm on life elsewhere from human impact.
Editor: Martin Heath
Editorial assistance: Penelope Stanford & Laurance Doyle
Prime Meridian Archive
2012
PM 1. July 20, 2012
PM 2. August 28, 2012
PM 3. September 10, 2012
PM 4. September 23, 2012
PM 5. October 2, 2012
PM 6. October 17, 2012
PM 7. November 27, 2012
PM 8 December 21, 2012
2013
PM 9. January 16, 2013
PM 10. February 16, 2013
PM 11. March 16, 2013
PM 12. April 11, 2013
PM 13. May 25, 2013
PM 14. June 30, 2013
PM 15. July 31, 2013
PM 16. August 31, 2013
PM 17. September 30, 2013
PM 18. October 25, 2013
PM 19. November 30, 2013
PM 20. December 31, 2013
2014
PM 21. January 31, 2014
PM 22. February 28, 2014
PM 23. March 27, 2014
PM 24. April 16, 2014
PM 25. May 6, 2014
PM 26. May 31, 2014
PM 28. July 19, 2014
PM 29. August 20, 2014
PM 30. August 31, 2014
PM 31. September 30, 2014
PM 32. October 30, 2014
PM 33. November 15, 2014
PM 34. December 6, 2014
2015
PM 35. January 5, 2015
PM 36. February 5, 2015
PM 37. February 28, 2015
PM 38. March 31, 2015
PM 39. April 20, 2015
PM 40. May 25, 2015
PM 41. June 30, 2015
PM 42. July 31, 2015
PM 43. August 20, 2015
PM 44. August 31, 2015
PM 45. September 30, 2015
PM 46. October 31, 2015
PM 47. November 30, 2015
PM 48. December 28, 2015
2016
PM 49. January 31, 2016
PM 50. February 17, 2016
PM 51. March 29, 2016
PM 52. April 16, 2016
PM 53. April 30, 2016
PM 54. May 28, 2016
PM 55. June 4, 2016
PM 56. June 16, 2016
PM 57. July 7, 2016
PM 58. August 4, 2016
PM 59. August 31, 2016
PM 60. September 30, 2016
PM 61, October 31, 2016
PM 62. November 25, 2016
PM 63. December 20, 2016
2017
PM 64. January 1, 2017
PM 65. January 31, 2017
PM 66. February 28, 2017
PM 67. March 25, 2017
PM 68. March 31, 2017
PM 69. April 22, 2017
PM 70. April 26, 2017
PM 71. April 30, 2017
PM 72. May 31, 2017
PM 73. June 15, 2017
PM 74. July 17, 2017
PM 75. July 30, 2017
PM 76. August 30, 2017
PM 77. September 5, 2017
PM 78. September 22, 2017
PM 79. October 4, 2017
PM 80. October 30, 2017
PM 81. November 30, 2017
PM 82. December 23, 2017
2018
PM 83. January 31, 2018
PM 84. February 28, 2018
PM 85. March 31, 2018
PM 86. April 27, 2018
PM 87. April 30, 2018
PM 88. May 23, 2018
PM 89. May 31, 2018
PM 90. June 30, 2018
PM 91. July 16 2018
PM 92. August 9, 2018
PM 93. August 31, 2018
PM 94. September 30, 2018
PM 95. October 25, 2018
PM 96. November 15, 2018
PM 97. November 25, 2018
PM 98. December 22, 2018
PM 99. December 31, 2018
2019
PM 100. January 31, 2019
PM 101. February 28, 2019
PM 102. March 31, 2019
PM 103. April 29, 2019
PM 104
PM 105
PM 106
PM 107
PM 108. July 31, 2019
PM 109. August 15, 2019
PM 110. August 30, 2019
PM 111. September 21, 2019
PM 112. September 25, 2019
PM 113. September 30, 2019
PM 114. October 15, 2019
PM 115. October 31, 2019
PM 116. November 20, 2019
PM 117. November 30, 2019
PM 118. December 22, 2019
PM 119. December 31, 2019
2020
PM 120. January 20, 2020
PM 121. February 29, 2020
PM 122. March 27, 2020
PM 123. April 6, 2020
PM 124. May 7, 2020
PM 125. June 8, 2020
PM 126. July 1, 2020
PM 127. August 8, 2020
PM 128. August 28, 2020
PM 129. September 21, 2020
PM 130. September 30, 2020
PM 131. October 29, 2020
PM 132. November 17, 2020
PM 133. December 14, 2020
PM 134. December 31, 2020
2021
PM 135. January 5, 2021
PM 136. January 29, 2021
PM 137. February 28, 2021
PM 138. March 25, 2021
PM 139. April 30, 2021
PM 140. May 31, 2021
PM 141. June 30, 2021
PM 142. July 30, 2021
PM 143. August 20 2021
PM 144. August 31, 2021
PM 145. September 20, 2021
PM 146. September 30, 2021
PM 147. October 9, 2021
PM 148. October 31, 2021
PM 149. November 30, 2021
PM 150. December 21, 2021
2022
PM 151. January 28, 2022
PM 152. February 22, 2022
PM 153. March 28, 2022
PM 154. April 8, 2022
PM 155. April 30, 2022
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