BBC News Science & Environment
![Computer simulation](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758im_/https://ichef.bbci.co.uk/news/490/cpsprodpb/1523/production/_114211450_1.jpg)
Cosmic signal rattles Earth after 7 billion years
Gravitational waves arrive from a black hole collision that occurred half-way across the Universe.
Top Stories
![Computer simulation](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758im_/https://ichef.bbci.co.uk/news/490/cpsprodpb/1523/production/_114211450_1.jpg)
Cosmic signal rattles Earth after 7 billion years
Gravitational waves arrive from a black hole collision that occurred half-way across the Universe.
![Solid rocket booster at test site in Utah](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/41C8/production/_114204861_189531-1_sls-booster_0.jpg)
Booster rocket for Moon missions set for key test
Engineers are preparing to test a booster rocket that will help send astronauts back to the Moon.
![China](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/14312/production/_114160728_sol2.png)
Power companies 'hindering' move to green energy
New research suggests utilities are dragging their feet when it comes to embracing wind and solar.
![Dhritiman Mukherjee image of a Gharial croc](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/0616/production/_114185510_wpy.jpg)
How many crocodiles can you see in this photo?
Gharial crocodiles may number less than 1,000 individuals in the wild - but there is always hope.
![Curlew fledgling](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/422C/production/_114204961_photo01-07-2019222744.jpg)
Curlew conservation project saves young birds
Five curlew fledglings are released near Lough Neagh after they were saved as eggs in late spring.
![An illustration of the Hermeus hypersonic aircraft](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/9561/production/_113914283_hermeus_air_force_one_concept.png)
Rival powers jockey for lead in hypersonic aircraft
The US, China and Russia are pouring money into aircraft that can fly at five times the speed of sound.
![An activist from the climate protest group Extinction Rebellion is carried away by police officers](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/138E3/production/_114199008_gettyimages-1228296932.jpg)
Arrests as Extinction Rebellion protests begin
Protesters block a road near Parliament and are planning a "walk of shame" near the Bank of England.
Featured Contents
![Computer simulation](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758im_/https://ichef.bbci.co.uk/news/490/cpsprodpb/1523/production/_114211450_1.jpg)
Cosmic signal rattles Earth after 7 billion years
Gravitational waves arrive from a black hole collision that occurred half-way across the Universe.
![Solid rocket booster at test site in Utah](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/41C8/production/_114204861_189531-1_sls-booster_0.jpg)
Booster rocket for Moon missions set for key test
Engineers are preparing to test a booster rocket that will help send astronauts back to the Moon.
![China](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/14312/production/_114160728_sol2.png)
Power companies 'hindering' move to green energy
New research suggests utilities are dragging their feet when it comes to embracing wind and solar.
![Dhritiman Mukherjee image of a Gharial croc](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/0616/production/_114185510_wpy.jpg)
How many crocodiles can you see in this photo?
Gharial crocodiles may number less than 1,000 individuals in the wild - but there is always hope.
![Curlew fledgling](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/422C/production/_114204961_photo01-07-2019222744.jpg)
Curlew conservation project saves young birds
Five curlew fledglings are released near Lough Neagh after they were saved as eggs in late spring.
![An illustration of the Hermeus hypersonic aircraft](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/9561/production/_113914283_hermeus_air_force_one_concept.png)
Rival powers jockey for lead in hypersonic aircraft
The US, China and Russia are pouring money into aircraft that can fly at five times the speed of sound.
![An activist from the climate protest group Extinction Rebellion is carried away by police officers](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/138E3/production/_114199008_gettyimages-1228296932.jpg)
Arrests as Extinction Rebellion protests begin
Protesters block a road near Parliament and are planning a "walk of shame" near the Bank of England.
![Solid rocket booster at test site in Utah](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/41C8/production/_114204861_189531-1_sls-booster_0.jpg)
Booster rocket for Moon missions set for key test
Engineers are preparing to test a booster rocket that will help send astronauts back to the Moon.
![China](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/14312/production/_114160728_sol2.png)
Power companies 'hindering' move to green energy
New research suggests utilities are dragging their feet when it comes to embracing wind and solar.
![Dhritiman Mukherjee image of a Gharial croc](https://webarchiveweb.wayback.bac-lac.canada.ca/web/20200902151758/https://ichef.bbci.co.uk/news/{width}/cpsprodpb/0616/production/_114185510_wpy.jpg)
How many crocodiles can you see in this photo?
Gharial crocodiles may number less than 1,000 individuals in the wild - but there is always hope.
Latest Updates
Laser instruments in the US and Italy catch the ripples from a cataclysmic union of black holes.
Jonathan Amos
BBC Science Correspondent
Gravitational waves arrive from a black hole collision that occurred half-way across the Universe.
Read moreMore than 200 horses, chickens, geese and rabbits were removed by the RSPCA and North Wales Police.
Read moreThe first stage of plans to improve visitor facilities at a Victorian dam in Powys is approved.
Read moreThe human remains were uncovered during repair works at the ruined Jedburgh Abbey in the Scottish Borders.
Read moreThe sites are being established in the west Highlands, including Melvaig and Staffin.
Read morePaul Rincon
Science editor, BBC News website
Engineers are preparing to test a booster rocket that will help send astronauts back to the Moon.
Read morePermission was sought and granted to collect the eggs and rear the birds to the point of release.
Conor Macauley
BBC NI Agriculture & Environment Correspondent
Five curlew fledglings are released near Lough Neagh after they were saved as eggs in late spring.
Read more