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 follows global environmental issues alongside the cycle of the seasons in South East England. It steps back to look at the Earth in its astronomical context and it pursues the search for other habitable worlds. It is part of the outreach programme of the Ecospheres Project.

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

Newsletters 104 – 107 will be posted shortly.

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